var activeImage = false;
	var imageGalleryLeftPos = false;
	var imageGalleryWidth = false;
	var imageGalleryObj = false;
	var maxGalleryXPos = false;
	var slideSpeed = 0;
	
	var currentImageIdx = 1;
	
	var imageSrcObj = false;
	
	var showPrev =false;
	
	var slideShowID = 0;
	
	function startSlide(e)
	{
		if(document.all)e = event;
		var id = this.id;
		this.getElementsByTagName('IMG')[0].src = 'images/' + this.id + '_over.png';	
		if(this.id=='arrow_right'){
			slideSpeedMultiply = Math.floor((e.clientX - this.offsetLeft) / 5);
			slideSpeed = -1*slideSpeedMultiply;
			slideSpeed = Math.max(-10,slideSpeed);
		}else{			
			slideSpeedMultiply = 10 - Math.floor((e.clientX - this.offsetLeft) / 5);
			slideSpeed = 1*slideSpeedMultiply;
			slideSpeed = Math.min(10,slideSpeed);
			if(slideSpeed<0)slideSpeed=10;
		}
	}
	
	function releaseSlide()
	{
		var id = this.id;
		this.getElementsByTagName('IMG')[0].src = 'images/' + this.id + '.png';
		slideSpeed=0;
	}
		
	function gallerySlide()
	{
		if(slideSpeed!=0){
			var leftPos = imageGalleryObj.offsetLeft;
			leftPos = leftPos/1 + slideSpeed;
		
			if(leftPos>maxGalleryXPos){
				leftPos = maxGalleryXPos;
				slideSpeed = 0;
				
			}
			if(leftPos<minGalleryXPos){
				leftPos = minGalleryXPos;
				slideSpeed=0;
			}
			
			imageGalleryObj.style.left = leftPos + 'px';
		}
		setTimeout('gallerySlide()',20);
		
	}
	
	function showImage()
	{
		if(activeImage)
		{
			activeImage.style.filter = 'alpha(opacity=50)';	
		    activeImage.style.opacity = 0.5;
		}	
		this.style.filter = 'alpha(opacity=100)';
		this.style.opacity = 1;	
		
		slideSpeed = 0;
		activeImage = this;
	}
	
	function initSlideShow()
	{

		    document.getElementById('arrow_left').onmousemove = startSlide;
		    document.getElementById('arrow_left').onmouseout = releaseSlide;
		    document.getElementById('arrow_right').onmousemove = startSlide;
		    document.getElementById('arrow_right').onmouseout = releaseSlide;
    		
		    imageGalleryObj = document.getElementById('theImages');
		    imageGalleryLeftPos = imageGalleryObj.offsetLeft;
		    imageGalleryWidth = document.getElementById('galleryContainer').offsetWidth - 0;//space after last image
		    maxGalleryXPos = imageGalleryObj.offsetLeft; 
		    minGalleryXPos = imageGalleryWidth - document.getElementById('slideEnd').offsetLeft;
		    var slideshowImages = imageGalleryObj.getElementsByTagName('IMG');
		    for(var no=0;no<slideshowImages.length;no++){
			    slideshowImages[no].onmouseover = showImage;
		    }
    		
		    
		    gallerySlide();
		    
		    var slide = getQueryVariable('slide');		    
		    if(slide > 0)
		        slideSpeed = (slide * -1);

	}
	
	
function addEvent(element, type, expression)
{	
    //bubbling = bubbling || false; 	
    if(window.addEventListener)	
    { 
        // Standard		
        element.addEventListener(type, expression, false);		
        return true;	
    } 
    else if(window.attachEvent) 
    { 
        // IE		
        element.attachEvent('on' + type, expression);		
        return true;	
    }
    else return false;
}

function getQueryVariable(variable) { 
  var query = window.location.search.substring(1); 
  var vars = query.split("&"); 
  for (var i=0;i<vars.length;i++) { 
    var pair = vars[i].split("="); 
    if (pair[0] == variable) { 
      return pair[1]; 
    } 
  } 

} 
	
	//window.onload = initSlideShow;
addEvent(window, 'load', new Function('initSlideShow()'));
    //addEvent(window, 'load', 'initSlideShow');