/***********************************************************************************************
	
	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 = 3;
			slideSpeed = -1*slideSpeedMultiply;
			slideSpeed = Math.max(-10,slideSpeed);
		}else{
						
			slideSpeedMultiply = 3;
			slideSpeed = 1*slideSpeedMultiply;
			slideSpeed = Math.min(10,slideSpeed);
			if(slideSpeed<0)slideSpeed=10;
		}
	}
	
	function releaseSlide()
	{
		var id = this.id;
		slideSpeed=0;
		if(this.id=='arrow_right'){
			slideSpeedMultiply = 1;
			slideSpeed = -1*slideSpeedMultiply;
			slideSpeed = Math.max(-1,slideSpeed);		
		}
		else
		{
			slideSpeedMultiply = 1;
			slideSpeed = 1*slideSpeedMultiply;
			slideSpeed = Math.max(1,slideSpeed);				
		}
	}
		
	function gallerySlide()
	{
		if(slideSpeed!=0){
			var leftPos = imageGalleryObj.offsetLeft;
			leftPos = leftPos/1 + slideSpeed;
				
			if(leftPos>maxGalleryXPos){
				slideSpeedMultiply = 1;
				slideSpeed = -1*slideSpeedMultiply;
				slideSpeed = Math.max(-1,slideSpeed);				
				//leftPos = maxGalleryXPos;
				//slideSpeed = 0;
				
			}
			if(leftPos<minGalleryXPos){
				slideSpeedMultiply = 1;
				slideSpeed = 1*slideSpeedMultiply;
				slideSpeed = Math.max(1,slideSpeed);				
					
				//leftPos = minGalleryXPos;
				//slideSpeed=0;
			}
			
			imageGalleryObj.style.left = leftPos + 'px';
		}
		setTimeout('gallerySlide()',20);
		
	}
	
	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 - 80;
		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;
		//}

		slideSpeedMultiply = 1;
		slideSpeed = -1*slideSpeedMultiply;
		slideSpeed = Math.max(-10,slideSpeed);
			
		gallerySlide();
	}
	
	function showPreview(imagePath,imageIndex,note){
		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];
		
		if(displayWaitMessage){
			document.getElementById('waitMessage').style.display='inline';
		}
		document.getElementById('largeImageCaption').style.display='none';
		img.onload = function() { hideWaitMessageAndShowCaption(imageIndex-1); };
		img.src = imagePath;
		
		document.getElementById('idMedia').value=imageIndex;
		
		if (note) {
			if (note<=0.5) document.getElementById('smiley').src="/charte/smileys/smiley3.gif";
			else {
				if (note<=1) document.getElementById('smiley').src="/charte/smileys/smiley2.gif";
				else document.getElementById('smiley').src="/charte/smileys/smiley1.gif";
			}
		}	
		
	}
	
	
	function hideWaitMessageAndShowCaption(imageIndex)
	{
		document.getElementById('waitMessage').style.display='none';	
		document.getElementById('largeImageCaption').innerHTML = imageGalleryCaptions[imageIndex];
		document.getElementById('largeImageCaption').style.display='block';
		
	}

	//window.onload = initSlideShow;