/***********************************************************************************************
	
	Copyright (c) 2005 - Alf Magne Kalleland post@dhtmlgoodies.com
	
	UPDATE LOG:
	
	March, 10th, 2006 : Added support for a message while large image is loading
	
	Get this and other scripts at www.dhtmlgoodies.com
	
	You can use this script freely as long as this copyright message is kept intact.
	
	***********************************************************************************************/ 
   	
	var displayWaitMessage=true;	// Display a please wait message while images are loading?
  	
   		
	var activeImage = false;
	var imageGalleryLeftPos = false;
	var imageGalleryWidth = false;
	var imageGalleryObj = false;
	var maxGalleryXPos = false;
	var slideSpeed = 0;
	var imageGalleryCaptions = new Array();
		
	function startSlide(e)
	{
	
		if(document.all)e = event;
		var id = this.id;
		//this.getElementsByTagName('IMG')[0].src = 'images/' + this.id + '_over.gif';	
		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 + '.gif';
		slideSpeed=0;
	}
		
	function gallerySlide()
	{
		if(slideSpeed!=0){
		    if (imageGalleryObj == null) imageGalleryObj = document.getElementById('theImages');
			var leftPos = imageGalleryObj.offsetLeft;
			leftPos = leftPos/1 + slideSpeed;
			
			if(leftPos>maxGalleryXPos){
				leftPos = maxGalleryXPos;
				slideSpeed = 0;
				
			}
			
			if(leftPos<minGalleryXPos){
				leftPos = minGalleryXPos;
				slideSpeed=0;
			}

			if(document.getElementById('slideEnd').offsetLeft < 400)
			    leftPos = 13;

			imageGalleryObj.style.left = leftPos + 'px';
		}
		setTimeout('gallerySlide()',45);
		
	}
	
	function showImage()
	{
		if(activeImage){
			//activeImage.style.filter = 'alpha(opacity=50)';	
//			activeImage.style.border = '1px';
//			activeImage.style.border.color = 'red';
			
		}	
		//this.style.filter = 'alpha(opacity=100)';
		//this.style.opacity = 1;	
		activeImage = this;	
	}
	
	function initSlide()
	{
	    var arrow_left = document.getElementById('arrow_left');
	    var arrow_right = document.getElementById('arrow_right');
	    if(arrow_left != null && arrow_right != null)
	    {
		    arrow_left.onmousemove = startSlide;
		    arrow_left.onmouseout = releaseSlide;
		    arrow_right.onmousemove = startSlide;
		    arrow_right.onmouseout = releaseSlide;
		    imageGalleryObj = document.getElementById('theImages');
    		
		    imageGalleryLeftPos = imageGalleryObj.offsetLeft;
		    imageGalleryWidth = document.getElementById('galleryContainer').offsetWidth - 15;

		    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;
//		    }
    		
		    var divs = imageGalleryObj.getElementsByTagName('DIV');
		    for(var no=0;no<divs.length;no++){
			    if(divs[no].className=='imageCaption')imageGalleryCaptions[imageGalleryCaptions.length] = divs[no].innerHTML;
		    }
		    gallerySlide();
    	}

	}
	
	function selectImage(index)
	{
		var subImagesForBorders = document.getElementById('theImages').getElementsByTagName('IMG');
		try
		{
		    subImagesForBorders[index].className = 'StepSelectedPic';
		}
		catch(e){}
	}
	
	function showPreview(imagePath,imageIndex){
		var subImages = document.getElementById('previewPane').getElementsByTagName('IMG');
		if(subImages.length==0){
			var img = document.createElement('IMG');
			document.getElementById('previewPane').appendChild(img);
		}else img = subImages[0];
		
		img.onload = function() { hideWaitMessageAndShowCaption(imageIndex-1); };
		img.src = imagePath;
		
		var subImagesForBorders = document.getElementById('theImages').getElementsByTagName('IMG');
		if(subImagesForBorders.length > 0)
		{
		    for(i=0;i<subImagesForBorders.length;i++)
		        subImagesForBorders[i].className = '';
		}
		
		
	}
	function hideWaitMessageAndShowCaption(imageIndex)
	{
		//document.getElementById('waitMessage').style.display='none';	
	}
	
//window.onload = initSlideShow;

/*
function findPos(obj) {
	var curleft = curtop = 0;
	if (obj.offsetParent) {
	do {
			curleft += obj.offsetLeft;
			curtop += obj.offsetTop;
		} while (obj = obj.offsetParent);
	return [curleft,curtop];
}
*/