//main page init
jQuery(function(){
	initPage();
	VSA_initScrollbars();
	initTabs();
	initGalleries();
	
	jQuery("div.image-info a.imghide").hide();

		jQuery("div.image-gallery a.imghide").hide();

		jQuery('div.image-info a').fancybox({
				'overlayOpacity' : 0.9,
				'centerOnScroll' : true,
				'titleShow' 	 : false
		});	

		jQuery('div.image-gallery a').fancybox({
				'overlayOpacity' : 0.9,
				'centerOnScroll' : true,
				'titleShow' 	 : false
		});	


		jQuery('a.workflow').fancybox({
				'overlayOpacity' : 0.9,
				'centerOnScroll' : true,
				'titleShow' 	 : false
		});

	   jQuery('input#MERGE0').focus(function() {
	      $(this).val('')
	      });


	  jQuery("a.case_video_play[rel]").overlay({
	      mask: {
			 		color: '#000',
					loadSpeed: 200,
					opacity: 0.6           

	      }, 
	      effect: 'apple',

	      // This will stop the player again when the player gets closed
	      // Internet Explorer doesn't unload elements properly when overlays get closed
	      // This will only work with one player on the page
	   		onClose: function() {
					jwplayer().stop();
				}
	  });


	   jQuery("a.btn-play[rel]").overlay({
	      mask: {
			 		color: '#000',
					loadSpeed: 200,
					opacity: 0.6           

	      }, 
	      effect: 'apple',

	      // This will stop the player again when the player gets closed
	      // Internet Explorer doesn't unload elements properly when overlays get closed
	      // This will only work with one player on the page
	   		onClose: function() {
					jwplayer().stop();
				}
	  });

	   jQuery("a.abtn-play[rel]").overlay({
	      mask: {
			 		color: '#000',
					loadSpeed: 200,
					opacity: 0.6           

	      }, 


	      // This will stop the player again when the player gets closed
	      // Internet Explorer doesn't unload elements properly when overlays get closed
	      // This will only work with one player on the page
	   		onClose: function() {
					jwplayer().stop();
				}
	  });	


				// function for mega-dropdown to determine if the product is a one line or two, it its one we add a class to adjust padding.
				$('ul#prod_drop li p').each(function(index) {
					var x;
    			x = ($(this).text().length);
    			if (x < 8) {
    				$("span", this).addClass("centerprod");
    			}
				});	
	
	
})

//tabs init
function initTabs(){
  jQuery('.tabset').jqueryTabs({
   addToParent:false,
   holdHeight:false,
   activeClass:'active',
   tabLinks:'a.tab',
   fadeSpeed:0,
   event:'click',
  });
 
 jQuery('[href="#tab1"]').addClass('active');
 jQuery('#tab1').css('display','block');

 }
 
// galleries init
function initGalleries() {
	jQuery('div.fade-gallery').fadeGallery({
		slideElements:'.gallery-inf ul>li',
		pagerLinks:'.swicher ul li',
		btnNext:'a.next',
		btnPrev:'a.prev',
		btnPlayPause:'a.play-pause',
		pausedClass:'paused',
		playClass:'playing',
		activeClass:'active',
		pauseOnHover:true,
		autoRotation:true,
		autoHeight:false,
		switchTime:5000,
		duration:500,
		event:'click'
	});
	
	// jQuery('div.scroll-gallery').cyclingGall({
	// 	slideEl: '.gallery-inf>ul',
	// 	slides: '>li',
	// 	switcher: false,
	// 	autoSlide: false,
	// 	duration: 700,
	// 	btPrev: '.btn-prev, .prev, .prev-btn, .btn-up, .up-btn, .link-prev',
	// 	btNext: '.btn-next, .next, .next-btn, .btn-down, .down-btn, .link-next',
	// 	direction: false,
	// 	activeClass: 'active',
	// 	changeHeight: false,
	// 	step: false
	// });
}

jQuery.fn.cyclingGall = function(_opt){
	var _options = jQuery.extend({
		slideEl: '>ul',
		slides: '>li',
		switcher: false,
		autoSlide: 7000,
		duration: 700,
		btPrev: '.btn-prev, .prev, .prev-btn, .btn-up, .up-btn, .link-prev',
		btNext: '.btn-next, .next, .next-btn, .btn-down, .down-btn, .link-next',
		direction: false,
		activeClass: 'active',
		changeHeight: false,
		step: false
	}, _opt);
	var _enabledClass = 'slide-enabled';

	return this.each(function(){
		if (jQuery(this).hasClass(_enabledClass)) return;
		var _holder = jQuery(this),
			_animSpeed = _options.duration,
			_duration = _options.autoSlide,
			_slideEl = jQuery(_options.slideEl, _holder).addClass('slideEl'),
			_slides = jQuery(_options.slides, _slideEl),
			_btNext = jQuery(_options.btNext, _holder),
			_btPrev = jQuery(_options.btPrev, _holder),
			_switcher = _options.switcher ? jQuery(_options.switcher, _holder) : false,
			_duration = _options.autoSlide,
			_activeClass = _options.activeClass,
			_direction = _options.direction,
			_frame = _options.changeHeight ? jQuery(_options.changeHeight, _holder) : false,
			_slidesStep = _options.step ? _options.step : 1;
		var _step = _slides.eq(0).outerWidth(true);
		var _active = 0;
		var _t;
		
		if (!_direction){
			var _offset = _step * (_slides.length);
			_slideEl.css('margin-left', -_offset);
			_slides.clone().appendTo(_slideEl);
			_slides.clone().appendTo(_slideEl);
		}
		else {
			_step = _slides.eq(0).outerHeight(true);
			var _offset = _step * (_slides.length);
			_slideEl.css('margin-top', -_offset);
			_slides.clone().appendTo(_slideEl);
			_slides.clone().appendTo(_slideEl);
		}
		if (_frame){
			if (_frame.height() != _slides.eq(_active).height()) _frame.css({
				'height': _slides.eq(_active).height()
			})
		}
			
		function changeSlide(_to){
			if (_switcher) {
				_switcher.eq(_active).removeClass(_activeClass);
				if (_to < 0) _switcher.eq(_slides.length-1).addClass(_activeClass);
				else if (_to > _slides.length-1) _switcher.eq(0).addClass(_activeClass);
				else _switcher.eq(_to).addClass(_activeClass);
			}
			if (_frame && !_frame.hasClass('slideEl')){
				var _toSl = _to;
				if (_to < 0) _toSl = _slides.length-1
				else if (_to > _slides.length-1) _toSl = 0;
				if (_frame.height() != _slides.eq(_toSl).height()) _frame.animate({
					'height': _slides.eq(_toSl).height()
				}, _animSpeed)
			}
			
			if (_direction){
				if (_frame && _frame.hasClass('slideEl')) {
					var _toSl = _to;
					if (_to < 0) _toSl = _slides.length-1
					else if (_to > _slides.length-1) _toSl = 0;	
					_slideEl.animate({
						'margin-top': -_step*_to - _offset,
						'height': _slides.eq(_toSl).height()
					}, _animSpeed, function(){
						_active = _to;
						if (_active < 0) {
							_active = _slides.length + _active;
							_slideEl.css('margin-top',-_offset - _step*_active)
						}
						else if (_active > _slides.length-1) {
							_active = 0 + _active - _slides.length;
							_slideEl.css('margin-top',-_offset)
						}
					})
				}
				else {
					_slideEl.animate({
						'margin-top': -_step*_to - _offset
					}, _animSpeed, function(){
						_active = _to;
						if (_active < 0) {
							_active = _slides.length + _active;
							_slideEl.css('margin-top',-_offset - _step*_active)
						}
						else if (_active > _slides.length-1) {
							_active = 0 + _active - _slides.length;
							_slideEl.css('margin-top',-_offset)
						}
					})
				}
			}
			else {
				if (_frame && _frame.hasClass('slideEl')) {
					var _toSl = _to;
					if (_to < 0) _toSl = _slides.length-1
					else if (_to > _slides.length-1) _toSl = 0;	
					_slideEl.animate({
						'margin-left': -_step*_to - _offset,
						'height': _slides.eq(_toSl).height()
					}, _animSpeed, function(){
						_active = _to;
						if (_active < 0) {
							_active = _slides.length + _active;
							_slideEl.css('margin-left',-_offset - _step*_active)
							
						}
						else if (_active > _slides.length-1) {
							_active = 0 + _active - _slides.length;
							_slideEl.css('margin-left',-_offset - _step*_active)
						}
					})
				}
				else {
					_slideEl.animate({
						'margin-left': -_step*_to - _offset
					}, _animSpeed, function(){
						_active = _to;
						if (_active < 0) {
							_active = _slides.length + _active;
							_slideEl.css('margin-left',-_offset - _step*_active)
							
						}
						else if (_active > _slides.length-1) {
							_active = 0 + _active - _slides.length;
							_slideEl.css('margin-left',-_offset - _step*_active)
						}
					})
				}
			}
		}
		
		if (_duration) {
			_t = setInterval(function(){
				changeSlide(_active+_slidesStep)
			}, _duration)
			
			_holder.mouseenter(function(){
				if (_t) clearInterval(_t);
			}).mouseleave(function(){
				if (_t) clearInterval(_t);
				_t = setInterval(function(){
					changeSlide(_active+_slidesStep)
				}, _duration)
			})
		}
		
		if (_switcher) {
			_switcher.click(function(){
				if (!_slideEl.is(':animated')) {
					changeSlide(_switcher.index(jQuery(this)));
				}
				return false;
			})
		}
		
		if (_btNext) {
			_btNext.click(function(){
				if (!_slideEl.is(':animated')) {
					changeSlide(_active+_slidesStep);
				}
				return false;
			})
		}
		if (_btPrev) {
			_btPrev.click(function(){
				if (!_slideEl.is(':animated')) {
					changeSlide(_active-_slidesStep);
				}
				return false;
			})
		}
	});
}

// slideshow plugin
jQuery.fn.fadeGallery = function(_options){
	var _options = jQuery.extend({
		slideElements:'div.slideset > div',
		pagerLinks:'div.pager a',
		btnNext:'a.next',
		btnPrev:'a.prev',
		btnPlayPause:'a.play-pause',
		btnPlay:'a.play',
		btnPause:'a.pause',
		pausedClass:'paused',
		disabledClass: 'disabled',
		playClass:'playing',
		activeClass:'active',
		loadingClass:'ajax-loading',
		loadedClass:'slide-loaded',
		dynamicImageLoad:false,
		dynamicImageLoadAttr:'alt',
		currentNum:false,
		allNum:false,
		startSlide:null,
		noCircle:false,
		pauseOnHover:true,
		autoRotation:false,
		autoHeight:false,
		onBeforeFade:false,
		onAfterFade:false,
		onChange:false,
		disableWhileAnimating:false,
		switchTime:3000,
		duration:650,
		event:'click'
	},_options);

	return this.each(function(){
		// gallery options
		if(this.slideshowInit) return; else this.slideshowInit;
		var _this = jQuery(this);
		var _slides = jQuery(_options.slideElements, _this);
		var _pagerLinks = jQuery(_options.pagerLinks, _this);
		var _btnPrev = jQuery(_options.btnPrev, _this);
		var _btnNext = jQuery(_options.btnNext, _this);
		var _btnPlayPause = jQuery(_options.btnPlayPause, _this);
		var _btnPause = jQuery(_options.btnPause, _this);
		var _btnPlay = jQuery(_options.btnPlay, _this);
		var _pauseOnHover = _options.pauseOnHover;
		var _dynamicImageLoad = _options.dynamicImageLoad;
		var _dynamicImageLoadAttr = _options.dynamicImageLoadAttr;
		var _autoRotation = _options.autoRotation;
		var _activeClass = _options.activeClass;
		var _loadingClass = _options.loadingClass;
		var _loadedClass = _options.loadedClass;
		var _disabledClass = _options.disabledClass;
		var _pausedClass = _options.pausedClass;
		var _playClass = _options.playClass;
		var _autoHeight = _options.autoHeight;
		var _duration = _options.duration;
		var _switchTime = _options.switchTime;
		var _controlEvent = _options.event;
		var _currentNum = (_options.currentNum ? jQuery(_options.currentNum, _this) : false);
		var _allNum = (_options.allNum ? jQuery(_options.allNum, _this) : false);
		var _startSlide = _options.startSlide;
		var _noCycle = _options.noCircle;
		var _onChange = _options.onChange;
		var _onBeforeFade = _options.onBeforeFade;
		var _onAfterFade = _options.onAfterFade;
		var _disableWhileAnimating = _options.disableWhileAnimating;

		// gallery init
		var _anim = false;
		var _hover = false;
		var _prevIndex = 0;
		var _currentIndex = 0;
		var _slideCount = _slides.length;
		var _timer;
		if(_slideCount < 2) return;

		_prevIndex = _slides.index(_slides.filter('.'+_activeClass));
		if(_prevIndex < 0) _prevIndex = _currentIndex = 0;
		else _currentIndex = _prevIndex;
		if(_startSlide != null) {
			if(_startSlide == 'random') _prevIndex = _currentIndex = Math.floor(Math.random()*_slideCount);
			else _prevIndex = _currentIndex = parseInt(_startSlide);
		}
		_slides.css('opacity',0).eq(_currentIndex).css('opacity',1);
		if(_autoRotation) _this.removeClass(_pausedClass).addClass(_playClass);
		else _this.removeClass(_playClass).addClass(_pausedClass);

		// gallery control
		if(_btnPrev.length) {
			_btnPrev.bind(_controlEvent,function(){
				prevSlide();
				return false;
			});
		}
		if(_btnNext.length) {
			_btnNext.bind(_controlEvent,function(){
				nextSlide();
				return false;
			});
		}
		if(_pagerLinks.length) {
			_pagerLinks.each(function(_ind){
				jQuery(this).bind(_controlEvent,function(){
					if(_currentIndex != _ind) {
						if(_disableWhileAnimating && _anim) return;
						_prevIndex = _currentIndex;
						_currentIndex = _ind;
						switchSlide();
					}
					return false;
				});
			});
		}

		// play pause section
		if(_btnPlayPause.length) {
			_btnPlayPause.bind(_controlEvent,function(){
				if(_this.hasClass(_pausedClass)) {
					_this.removeClass(_pausedClass).addClass(_playClass);
					_autoRotation = true;
					autoSlide();
				} else {
					_autoRotation = false;
					if(_timer) clearTimeout(_timer);
					_this.removeClass(_playClass).addClass(_pausedClass);
				}
				return false;
			});
		}
		if(_btnPlay.length) {
			_btnPlay.bind(_controlEvent,function(){
				_this.removeClass(_pausedClass).addClass(_playClass);
				_autoRotation = true;
				autoSlide();
				return false;
			});
		}
		if(_btnPause.length) {
			_btnPause.bind(_controlEvent,function(){
				_autoRotation = false;
				if(_timer) clearTimeout(_timer);
				_this.removeClass(_playClass).addClass(_pausedClass);
				return false;
			});
		}

		// dynamic image loading (swap from ATTRIBUTE)
		function loadSlide(slide) {
			if(!slide.hasClass(_loadingClass) && !slide.hasClass(_loadedClass)) {
				var images = slide.find(_dynamicImageLoad) // pass selector here
				var imagesCount = images.length;
				if(imagesCount) {
					slide.addClass(_loadingClass);
					images.each(function(){
						var img = this;
						img.onload = function(){
							img.loaded = true;
							img.onload = null;
							setTimeout(reCalc,_duration);
						}
						img.setAttribute('src', img.getAttribute(_dynamicImageLoadAttr));
						img.setAttribute(_dynamicImageLoadAttr,'');
					}).css({opacity:0});

					function reCalc() {
						var cnt = 0;
						images.each(function(){
							if(this.loaded) cnt++;
						});
						if(cnt == imagesCount) {
							slide.removeClass(_loadingClass);
							images.animate({opacity:1},{duration:_duration,complete:function(){
								if(jQuery.browser.msie && jQuery.browser.version < 9) jQuery(this).css({opacity:'auto'})
							}});
							slide.addClass(_loadedClass)
						}
					}
				}
			}
		}

		// gallery animation
		function prevSlide() {
			if(_disableWhileAnimating && _anim) return;
			_prevIndex = _currentIndex;
			if(_currentIndex > 0) _currentIndex--;
			else {
				if(_noCycle) return;
				else _currentIndex = _slideCount-1;
			}
			switchSlide();
		}
		function nextSlide() {
			if(_disableWhileAnimating && _anim) return;
			_prevIndex = _currentIndex;
			if(_currentIndex < _slideCount-1) _currentIndex++;
			else {
				if(_noCycle) return;
				else _currentIndex = 0;
			}
			switchSlide();
		}
		function refreshStatus() {
			if(_dynamicImageLoad) loadSlide(_slides.eq(_currentIndex));
			if(_pagerLinks.length) _pagerLinks.removeClass(_activeClass).eq(_currentIndex).addClass(_activeClass);
			if(_currentNum) _currentNum.text(_currentIndex+1);
			if(_allNum) _allNum.text(_slideCount);
			_slides.eq(_prevIndex).removeClass(_activeClass);
			_slides.eq(_currentIndex).addClass(_activeClass);
			if(_noCycle) {
				if(_btnPrev.length) {
					if(_currentIndex == 0) _btnPrev.addClass(_disabledClass);
					else _btnPrev.removeClass(_disabledClass);
				}
				if(_btnNext.length) {
					if(_currentIndex == _slideCount-1) _btnNext.addClass(_disabledClass);
					else _btnNext.removeClass(_disabledClass);
				}
			}
			if(typeof _onChange === 'function') {
				_onChange(_this, _slides, _prevIndex, _currentIndex);
			}
		}
		function switchSlide() {
			_anim = true;
			if(typeof _onBeforeFade === 'function') _onBeforeFade(_this, _slides, _prevIndex, _currentIndex);
			_slides.eq(_prevIndex).stop().animate({'opacity':0}, {duration:_duration, queue: false, onComplete:function(){
				_anim = false;
			}});
			_slides.eq(_currentIndex).stop().animate({'opacity':1}, {duration:_duration, queue: false, onComplete:function(){
				if(typeof _onAfterFade === 'function') _onAfterFade(_this, _slides, _prevIndex, _currentIndex);
			}});
			if(_autoHeight) _slides.eq(_currentIndex).parent().animate({height:_slides.eq(_currentIndex).outerHeight(true)},{duration:_duration,queue:false});
			refreshStatus();
			autoSlide();
		}

		// autoslide function
		function autoSlide() {
			if(!_autoRotation || _hover) return;
			if(_timer) clearTimeout(_timer);
			_timer = setTimeout(nextSlide,_switchTime+_duration);
		}
		if(_pauseOnHover) {
			_this.hover(function(){
				_hover = true;
				if(_timer) clearTimeout(_timer);
			},function(){
				_hover = false;
				autoSlide();
			});
		}
		refreshStatus();
		autoSlide();
		
		/*jQuery(window).focus(function (){
			_hover = false;
			autoSlide();
		}).blur(function(){
			_hover = true;
			if(_timer) clearTimeout(_timer);
		})*/
	});
}

function initPage()
{
	clearFormFields({
		clearInputs: true,
		clearTextareas: true,
		passwordFieldText: true,
		addClassFocus: "focus",
		filterClass: "default"
	});
}
function clearFormFields(o)
{
	if (o.clearInputs == null) o.clearInputs = true;
	if (o.clearTextareas == null) o.clearTextareas = true;
	if (o.passwordFieldText == null) o.passwordFieldText = false;
	if (o.addClassFocus == null) o.addClassFocus = false;
	if (!o.filter) o.filter = "default";
	if(o.clearInputs) {
		var inputs = document.getElementsByTagName("input");
		for (var i = 0; i < inputs.length; i++ ) {
			if((inputs[i].type == "text" || inputs[i].type == "password") && inputs[i].className.indexOf(o.filterClass)) {
				inputs[i].valueHtml = inputs[i].value;
				inputs[i].onfocus = function ()	{
					if(this.valueHtml == this.value) this.value = "";
					if(this.fake) {
						inputsSwap(this, this.previousSibling);
						this.previousSibling.focus();
					}
					if(o.addClassFocus && !this.fake) {
						this.className += " " + o.addClassFocus;
						this.parentNode.className += " parent-" + o.addClassFocus;
					}
				}
				inputs[i].onblur = function () {
					if(this.value == "") {
						this.value = this.valueHtml;
						if(o.passwordFieldText && this.type == "password") inputsSwap(this, this.nextSibling);
					}
					if(o.addClassFocus) {
						this.className = this.className.replace(o.addClassFocus, "");
						this.parentNode.className = this.parentNode.className.replace("parent-"+o.addClassFocus, "");
					}
				}
				if(o.passwordFieldText && inputs[i].type == "password") {
					var fakeInput = document.createElement("input");
					fakeInput.type = "text";
					fakeInput.value = inputs[i].value;
					fakeInput.className = inputs[i].className;
					fakeInput.fake = true;
					inputs[i].parentNode.insertBefore(fakeInput, inputs[i].nextSibling);
					inputsSwap(inputs[i], null);
				}
			}
		}
	}
	if(o.clearTextareas) {
		var textareas = document.getElementsByTagName("textarea");
		for(var i=0; i<textareas.length; i++) {
			if(textareas[i].className.indexOf(o.filterClass)) {
				textareas[i].valueHtml = textareas[i].value;
				textareas[i].onfocus = function() {
					if(this.value == this.valueHtml) this.value = "";
					if(o.addClassFocus) {
						this.className += " " + o.addClassFocus;
						this.parentNode.className += " parent-" + o.addClassFocus;
					}
				}
				textareas[i].onblur = function() {
					if(this.value == "") this.value = this.valueHtml;
					if(o.addClassFocus) {
						this.className = this.className.replace(o.addClassFocus, "");
						this.parentNode.className = this.parentNode.className.replace("parent-"+o.addClassFocus, "");
					}
				}
			}
		}
	}
	function inputsSwap(el, el2) {
		if(el) el.style.display = "none";
		if(el2) el2.style.display = "inline";
	}
}

// jquery tabs plugin
jQuery.fn.jqueryTabs = function(_options){
	// default options
	var _options = jQuery.extend({
		addToParent:false,
		holdHeight:false,
		activeClass:'active',
		tabLinks:'a.tab',
		fadeSpeed:0,
		event:'click'
	},_options);

	return this.each(function(){
		var _holder = jQuery(this);
		var _fadeSpeed = _options.fadeSpeed;
		var _activeClass = _options.activeClass;
		var _addToParent = _options.addToParent;
		var _holdHeight = _options.holdHeight;
		var _tabLinks = jQuery(_options.tabLinks, _holder);
		var _tabset = (_addToParent ? _tabLinks.parent() : _tabLinks);
		var _event = _options.event;
		var _animating = false;

		var loc=window.location.hash.toString();
		
		// tabs init
		_tabLinks.each(function(){
			var _tmpLink = jQuery(this);
			var _tmpTab = jQuery(_tmpLink.attr('href'));
			var _classItem = (_addToParent ? _tmpLink.parent() : _tmpLink);
			if(_tmpTab.length) {
				if (_tmpLink.attr('href') == loc){
					_tmpTab.show();
					_tabLinks.removeClass(_activeClass); 
					_classItem.addClass(_activeClass);
				}
				else if(_classItem.hasClass(_activeClass) && (loc == '' || $(loc).length == 0)) _tmpTab.show();
				else {
					_tmpTab.hide();
					_classItem.removeClass('active');
				}
			}
		});


		// tab switcher
		function switchTab(_switcher) {
			if(!_animating) {
				var _link = jQuery(_switcher);
				var _newItem = (_addToParent ? _link.parent() : _link);
				var _newTab = jQuery(_link.attr('href'));
				if(_newItem.hasClass(_activeClass)) return;

				var _oldItem = jQuery(_addToParent ? _tabset : _tabLinks).filter('.'+_activeClass);
				var _oldTab = jQuery(jQuery(_addToParent ? _oldItem.children('a') : _oldItem).attr('href'));
				if(_newTab.length) {
					_animating = true;
					if(_oldItem.length) {
						_newItem.addClass(_activeClass);
						_oldItem.removeClass(_activeClass);

						var _parent = _oldTab.parent();
						if(_holdHeight) _parent.css({height:_parent.height()});

						_oldTab.fadeOut(_fadeSpeed,function(){
							_newTab.fadeIn(_fadeSpeed,function(){
								_animating = false;
							});
							if(_holdHeight) _parent.css({height:'auto'});
						});
					} else {
						_newItem.addClass(_activeClass);
						_newTab.fadeIn(_fadeSpeed,function(){
							_animating = false;
						});
					}
				}
			}
		}

		// control
		_tabLinks.each(function(){
			jQuery(this).bind(_event,function(){
				switchTab(this);
				return false;
			});
		});
	});
}

var VSA_scrollAreas = new Array();

var VSA_default_imagesPath = "images";
var VSA_default_btnUpImage = "button-up.gif";
var VSA_default_btnDownImage = "button-down.gif";
var VSA_default_scrollStep = 5;
var VSA_default_wheelSensitivity = 10;
var VSA_default_scrollbarPosition = 'right';//'left','right','inline';
var VSA_default_scrollButtonHeight = 11;
var VSA_default_scrollbarWidth = 20;

var VSA_resizeTimer = 2000;

function VSA_initScrollbars()
{
	var scrollElements = VSA_getElements("scrollable", "DIV", document, "class");
	for (var i=0; i<scrollElements.length; i++)
	{
		VSA_scrollAreas[i] = new ScrollArea(i, scrollElements[i]);
	}
}

function ScrollArea(index, elem) //constructor
{
	this.index = index;
	this.element = elem;

	var attr = this.element.getAttribute("imagesPath");
	this.imagesPath = attr ? attr : VSA_default_imagesPath;

	attr = this.element.getAttribute("btnUpImage");
	this.btnUpImage = attr ? attr : VSA_default_btnUpImage;

	attr = this.element.getAttribute("btnDownImage");
	this.btnDownImage = attr ? attr : VSA_default_btnDownImage;

	attr = Number(this.element.getAttribute("scrollStep"));
	this.scrollStep = attr ? attr : VSA_default_scrollStep;

	attr = Number(this.element.getAttribute("wheelSensitivity"));
	this.wheelSensitivity = attr ? attr : VSA_default_wheelSensitivity;

	attr = this.element.getAttribute("scrollbarPosition");
	this.scrollbarPosition = attr ? attr : VSA_default_scrollbarPosition;
	
	attr = this.element.getAttribute("scrollButtonHeight");
	this.scrollButtonHeight = attr ? attr : VSA_default_scrollButtonHeight;

	attr = this.element.getAttribute("scrollbarWidth");
	this.scrollbarWidth = attr ? attr : VSA_default_scrollbarWidth;

	this.scrolling = false;

	this.iOffsetY = 0;
	this.scrollHeight = 0;
	this.scrollContent = null;
	this.scrollbar = null;
	this.scrollup = null;
	this.scrolldown = null;
	this.scrollslider = null;
	this.scroll = null;
	this.enableScrollbar = false;
	this.scrollFactor = 1;
	this.scrollingLimit = 0;
	this.topPosition = 0;

	//functions declaration
	this.init = VSA_init;
	this.scrollUp = VSA_scrollUp;
	this.scrollDown = VSA_scrollDown;
	this.createScrollBar = VSA_createScrollBar;
	this.scrollIt = VSA_scrollIt;

	this.init();
}


function VSA_init() {
	this.scrollContent = document.createElement("DIV");
	this.scrollContent.style.position = "absolute";
	this.scrollContent.style.overflow = "hidden";
	this.scrollContent.style.width = this.element.offsetWidth + "px";
	this.scrollContent.style.height = this.element.offsetHeight + "px";

	while(this.element.children.length) this.scrollContent.appendChild(this.element.children[0]);

	this.element.style.overflow = "hidden";
	this.element.style.display = "block";
	this.element.style.visibility = "visible";
	this.element.style.position = "relative";
	this.element.appendChild(this.scrollContent);

	this.scrollContent.className = 'scroll-content';

	this.element.index = this.index;
	this.element.over = false;
	
	var _this = this;
	this.element.onmouseover = function(){
		_this.element.over = true;
	};
	this.element.onmouseout = function(){
		_this.element.over = false;
	}

	if (document.all)
	{
		this.element.onscroll = VSA_handleOnScroll;
		this.element.onresize = VSA_handleResize;
	}
	else
	{
		window.onresize = VSA_handleResize;
	}
	
	this.createScrollBar();
	
	if (window.addEventListener)
        /** DOMMouseScroll is for mozilla. */
        this.element.addEventListener('DOMMouseScroll', VSA_handleMouseWheel, false);
	/** IE/Opera. */
	this.element.onmousewheel = document.onmousewheel = VSA_handleMouseWheel;

}

function VSA_createScrollBar()
{

	if (this.scrollbar != null)
	{
		this.element.removeChild(this.scrollbar);
		this.scrollbar = null;
	}

	if (this.scrollContent.scrollHeight <= this.scrollContent.offsetHeight)
		this.enableScrollbar = false;
	else if (this.element.offsetHeight > 2*this.scrollButtonHeight)
		this.enableScrollbar = true;
	else
		this.enableScrollbar = false;

	if (this.scrollContent.scrollHeight - Math.abs(this.scrollContent.scrollTop) < this.element.offsetHeight)
		this.scrollContent.style.top = 0;

	if (this.enableScrollbar)
	{

		this.scrollbar = document.createElement("DIV");
		this.element.appendChild(this.scrollbar);		
		this.scrollbar.style.position = "absolute";
		this.scrollbar.style.top = "0px";
		this.scrollbar.style.height = this.element.offsetHeight+"px";
		this.scrollbar.style.width = this.scrollbarWidth + "px";

		this.scrollbar.className = 'vscroll-bar';

		if(this.scrollbarWidth != this.scrollbar.offsetWidth)
		{
			this.scrollbarWidth = this.scrollbar.offsetHeight;
		}
		
		this.scrollbarWidth = this.scrollbar.offsetWidth;

		if(this.scrollbarPosition == 'left')
		{
			this.scrollContent.style.left = this.scrollbarWidth + 5 + "px";			
			this.scrollContent.style.width = this.element.offsetWidth - this.scrollbarWidth - 5 + "px";			
		}
		else if(this.scrollbarPosition == 'right')
		{
			this.scrollbar.style.left = this.element.offsetWidth - this.scrollbarWidth  + "px";
			this.scrollContent.style.width = this.element.offsetWidth - this.scrollbarWidth - 5 + "px";			
		}

		//create scroll up button
		this.scrollup = document.createElement("DIV");
		this.scrollup.index = this.index;
		this.scrollup.onmousedown = VSA_handleBtnUpMouseDown;
		this.scrollup.onmouseup = VSA_handleBtnUpMouseUp;
		this.scrollup.onmouseout = VSA_handleBtnUpMouseOut;
		this.scrollup.style.position = "absolute";
		this.scrollup.style.top = "0px";
		this.scrollup.style.left = "0px";		
		this.scrollup.style.height = this.scrollButtonHeight + "px";		
		this.scrollup.style.width = this.scrollbarWidth + "px";
		
		this.scrollup.innerHTML = '<img src="' + this.imagesPath + '/' + this.btnUpImage + '" border="0"/>';
		this.scrollbar.appendChild(this.scrollup);

		this.scrollup.className = 'vscroll-up';

		if(this.scrollButtonHeight != this.scrollup.offsetHeight)
		{
			this.scrollButtonHeight = this.scrollup.offsetHeight;
		}
				
		//create scroll down button
		this.scrolldown = document.createElement("DIV");
		this.scrolldown.index = this.index;
		this.scrolldown.onmousedown = VSA_handleBtnDownMouseDown;
		this.scrolldown.onmouseup = VSA_handleBtnDownMouseUp;
		this.scrolldown.onmouseout = VSA_handleBtnDownMouseOut;
		this.scrolldown.style.position = "absolute";
		this.scrolldown.style.left = "0px";		
		this.scrolldown.style.top =  this.scrollbar.offsetHeight - this.scrollButtonHeight + "px";
		this.scrolldown.style.width = this.scrollbarWidth + "px";
		this.scrolldown.innerHTML = '<img src="' + this.imagesPath + '/' + this.btnDownImage + '" border="0"/>';
		this.scrollbar.appendChild(this.scrolldown);

		this.scrolldown.className = 'vscroll-down';

		//create scroll
		this.scroll = document.createElement("DIV");
		this.scroll.index = this.index;
		this.scroll.style.position = "absolute";
		this.scroll.style.zIndex = 0;
		this.scroll.style.textAlign = "center";
		this.scroll.style.top = this.scrollButtonHeight + "px";
		this.scroll.style.left = "0px";		
		this.scroll.style.width = this.scrollbarWidth + "px";
		
		var h = this.scrollbar.offsetHeight - 2*this.scrollButtonHeight;
		this.scroll.style.height = ((h > 0) ? h : 0) + "px";
		
		this.scroll.innerHTML = '';
		this.scroll.onclick = VSA_handleScrollbarClick;
		this.scrollbar.appendChild(this.scroll);
		this.scroll.style.overflow = "hidden";

		this.scroll.className = "vscroll-line";

		//create slider
		this.scrollslider = document.createElement("DIV");
		this.scrollslider.index = this.index;
		this.scrollslider.style.position = "absolute";
		this.scrollslider.style.zIndex = 1000;
		this.scrollslider.style.textAlign = "center";
		this.scrollslider.innerHTML = '<div id="scrollslider' + this.index + '" style="padding:0;margin:0;"><div class="scroll-bar-top"></div><div class="scroll-bar-bottom"></div></div>';
		this.scrollbar.appendChild(this.scrollslider);
		
		this.subscrollslider = document.getElementById("scrollslider"+this.index);		
		this.subscrollslider.style.height = Math.round((this.scrollContent.offsetHeight/this.scrollContent.scrollHeight)*(this.scrollbar.offsetHeight - 2*this.scrollButtonHeight)) + "px";
		
		this.scrollslider.className = "vscroll-slider";
		
		this.scrollHeight = this.scrollbar.offsetHeight - 2*this.scrollButtonHeight - this.scrollslider.offsetHeight;
		this.scrollFactor = (this.scrollContent.scrollHeight - this.scrollContent.offsetHeight)/this.scrollHeight;
		this.topPosition = getRealTop(this.scrollbar) + this.scrollButtonHeight;
		/* this.scrollbarHeight = this.scrollbar.offsetHeight - 2*this.scrollButtonHeight - this.scrollslider.offsetHeight; */

		this.scrollslider.style.top = /* 1 / this.scrollFactor * Math.abs(this.scrollContent.offsetTop) +*/ this.scrollButtonHeight + "px";
		this.scrollslider.style.left = "0px";
		this.scrollslider.style.width = "100%";
		this.scrollslider.onmousedown = VSA_handleSliderMouseDown;
		if (document.all)
			this.scrollslider.onmouseup = VSA_handleSliderMouseUp;
	}
	else
		this.scrollContent.style.width = this.element.offsetWidth + "px";
}

function VSA_handleBtnUpMouseDown()
{
	var sa = VSA_scrollAreas[this.index];
	sa.scrolling = true;
	sa.scrollUp();
}

function VSA_handleBtnUpMouseUp()
{
	VSA_scrollAreas[this.index].scrolling = false;
}

function VSA_handleBtnUpMouseOut()
{
	VSA_scrollAreas[this.index].scrolling = false;
}

function VSA_handleBtnDownMouseDown()
{
	var sa = VSA_scrollAreas[this.index];
	sa.scrolling = true;
	sa.scrollDown();
}

function VSA_handleBtnDownMouseUp()
{
	VSA_scrollAreas[this.index].scrolling = false;
}

function VSA_handleBtnDownMouseOut()
{
	VSA_scrollAreas[this.index].scrolling = false;
}

function VSA_scrollIt()
{
	this.scrollContent.scrollTop = this.scrollFactor * ((this.scrollslider.offsetTop + this.scrollslider.offsetHeight/2) - this.scrollButtonHeight - this.scrollslider.offsetHeight/2);
}

function VSA_scrollUp()
{
	if (this.scrollingLimit > 0)
	{
		this.scrollingLimit--;
		if (this.scrollingLimit == 0) this.scrolling = false;
	}
	if (!this.scrolling) return;
	if ( this.scrollContent.scrollTop - this.scrollStep > 0)
	{
		this.scrollContent.scrollTop -= this.scrollStep;
		this.scrollslider.style.top = 1 / this.scrollFactor * Math.abs(this.scrollContent.scrollTop) + this.scrollButtonHeight + "px";
	}
	else
	{
		this.scrollContent.scrollTop = "0";
		this.scrollslider.style.top = this.scrollButtonHeight + "px";
		return;
	}
	setTimeout("VSA_Ext_scrollUp(" + this.index + ")", 30);
}

function VSA_Ext_scrollUp(index)
{
	VSA_scrollAreas[index].scrollUp();
}

function VSA_scrollDown()
{
	if (this.scrollingLimit > 0)
	{
		this.scrollingLimit--;
		if (this.scrollingLimit == 0) this.scrolling = false;
	}
	if (!this.scrolling) return;


	this.scrollContent.scrollTop += this.scrollStep;
	this.scrollslider.style.top =  1 / this.scrollFactor * Math.abs(this.scrollContent.scrollTop) + this.scrollButtonHeight + "px";

	if (this.scrollContent.scrollTop >= (this.scrollContent.scrollHeight - this.scrollContent.offsetHeight))
	{
		this.scrollContent.scrollTop = (this.scrollContent.scrollHeight - this.scrollContent.offsetHeight);
		this.scrollslider.style.top = this.scrollbar.offsetHeight - this.scrollButtonHeight - this.scrollslider.offsetHeight + "px";
		return;
	}

	setTimeout("VSA_Ext_scrollDown(" + this.index + ")", 30);
}

function VSA_Ext_scrollDown(index)
{
	VSA_scrollAreas[index].scrollDown();
}

function VSA_handleMouseMove(evt)
{
	var sa = VSA_scrollAreas[((document.all && !window.opera) ? this.index : document.documentElement.scrollAreaIndex)];
	var posy = 0;
	if (!evt) var evt = window.event;
	
	if (evt.pageY)
		posy = evt.pageY;
	else if (evt.clientY)
		posy = evt.clientY;
			
		if (document.all && !window.opera)
		{
			posy += document.documentElement.scrollTop;
		}

	var iNewY = posy - sa.iOffsetY - getRealTop(sa.scrollbar) - sa.scrollButtonHeight;
		iNewY += sa.scrollButtonHeight;
		
	if (iNewY < sa.scrollButtonHeight)
		iNewY = sa.scrollButtonHeight;
	if (iNewY > (sa.scrollbar.offsetHeight - sa.scrollButtonHeight) - sa.scrollslider.offsetHeight)
		iNewY = (sa.scrollbar.offsetHeight - sa.scrollButtonHeight) - sa.scrollslider.offsetHeight;

	sa.scrollslider.style.top = iNewY + "px";

	sa.scrollIt();
}

function VSA_handleSliderMouseDown(evt)
{
	if (!(document.uniqueID && document.compatMode && !window.XMLHttpRequest))
	{
		document.onselectstart = function() { return false; }
		document.onmousedown = function() { return false; }
	}

	var sa = VSA_scrollAreas[this.index];
	if (document.all && !window.opera)
	{
		sa.scrollslider.setCapture()
		sa.iOffsetY = event.offsetY;
		sa.scrollslider.onmousemove = VSA_handleMouseMove;
	}
	else
	{
		if(window.opera)
		{
			sa.iOffsetY = event.offsetY;
		}
		else
		{
			sa.iOffsetY = evt.layerY;
		}
		document.documentElement.scrollAreaIndex = sa.index;
		document.documentElement.addEventListener("mousemove", VSA_handleMouseMove, true);
		document.documentElement.addEventListener("mouseup", VSA_handleSliderMouseUp, true);
	}
	return false;
}

function VSA_handleSliderMouseUp()
{
	if (!(document.uniqueID && document.compatMode && !window.XMLHttpRequest))
	{
		document.onmousedown = null;
		document.onselectstart = null;
	}

	if (document.all && !window.opera)
	{
		var sa = VSA_scrollAreas[this.index];
		sa.scrollslider.onmousemove = null;
		sa.scrollslider.releaseCapture();
		sa.scrollIt();
	}
	else
	{
		var sa = VSA_scrollAreas[document.documentElement.scrollAreaIndex];
		document.documentElement.removeEventListener("mousemove", VSA_handleMouseMove, true);
		document.documentElement.removeEventListener("mouseup", VSA_handleSliderMouseUp, true);
		sa.scrollIt();
	}
	return false;
}

function VSA_handleResize()
{
	if (VSA_resizeTimer)
	{
		clearTimeout(VSA_resizeTimer);
		VSA_resizeTimer = 0;
	}
	VSA_resizeTimer = setTimeout("VSA_performResizeEvent()", 100);
}

function VSA_performResizeEvent()
{
	for (var i=0; i<VSA_scrollAreas.length; i++)
		VSA_scrollAreas[i].createScrollBar();
}
function VSA_handleMouseWheel(event){
	if (this.index != null) {
		var sa = VSA_scrollAreas[this.index];
		
		if (sa.scrollbar == null) return;
		sa.scrolling = true;
		sa.scrollingLimit = sa.wheelSensitivity;
		
        var delta = 0;
        if (!event) /* For IE. */
                event = window.event;
        if (event.wheelDelta) { /* IE/Opera. */
                delta = event.wheelDelta/120;
                 
                /*if (window.opera)
                        delta = -delta;*/
        } else if (event.detail) { /** Mozilla case. */
                delta = -event.detail/3;
        }
        if (delta && sa.element.over) {
                if (delta > 0)
			        sa.scrollUp();
				else
			        sa.scrollDown();
				
                if (event.preventDefault)
                        event.preventDefault();
                event.returnValue = false;
        }
	}
}

function VSA_handleSelectStart()
{
	event.returnValue = false;
}

function VSA_handleScrollbarClick(evt)
{
	var sa = VSA_scrollAreas[this.index];
	var offsetY = (document.all ? event.offsetY : evt.layerY);

	if (offsetY < (sa.scrollButtonHeight + sa.scrollslider.offsetHeight/2))
		sa.scrollslider.style.top = sa.scrollButtonHeight + "px";
	else if (offsetY > (sa.scrollbar.offsetHeight - sa.scrollButtonHeight - sa.scrollslider.offsetHeight))
		sa.scrollslider.style.top = sa.scrollbar.offsetHeight - sa.scrollButtonHeight - sa.scrollslider.offsetHeight + "px";
	else
	{
		sa.scrollslider.style.top = offsetY + sa.scrollButtonHeight - sa.scrollslider.offsetHeight/2 + "px";
	}
	sa.scrollIt();
}

function VSA_handleOnScroll()
{
	//event.srcElement.doScroll("pageUp");
}

//--- common functions ----

function VSA_getElements(attrValue, tagName, ownerNode, attrName) //get Elements By Attribute Name
{
	if (!tagName) tagName = "*";
	if (!ownerNode) ownerNode = document;
	if (!attrName) attrName = "name";
	var result = [];
	var nl = ownerNode.getElementsByTagName(tagName);
	for (var i=0; i<nl.length; i++)
	{
	//	if (nl.item(i).getAttribute(attrName) == attrValue)
//		result.push(nl.item(i));
		if (nl.item(i).className.indexOf(attrValue) != -1)
		result.push(nl.item(i));
	}
	return result;
}



function getRealTop(obj) {
	var posTop = 0;
	while (obj.offsetParent) {
		posTop += obj.offsetTop;
		obj = obj.offsetParent;
	}
	return posTop;
}