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){
			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=50)';
		this.style.opacity = 0.5;	
		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;*/
		document.getElementById('a1').style.filter = "alpha(opacity:100)";
		document.getElementById('a1').style.opacity=1;
		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;
		}
		gallerySlide();
	}
	
	function showPreview(imagePath,imageIndex,href,te)
	{
		document.getElementById(te).style.filter = "alpha(opacity:100)";
		document.getElementById(te).style.opacity=1;
		var hr='article.php?aid='+href
		var subImages = document.getElementById('previewPane').getElementsByTagName('IMG');
		var divHref =document.getElementById('te');
		
		if(subImages.length==0)
		{						
			var divHref = document.createElement('a');
			divHref.href =hr;
			var img = document.createElement('IMG');
			document.getElementById('previewPane').appendChild(divHref);
			divHref.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.style.filter="blendTrans(duration=0)";
		img.style.filter="blendTrans(duration=crossFadeDuration)";
		img.filters.blendTrans.Apply();
		img.filters.blendTrans.Play();*/
		imageId = 'thephoto';
  		image = document.getElementById(imageId);
		setOpacity(image, 0);
  		img.style.visibility = 'visible';
  		fadeIn(imageId,0);
		img.src = imagePath;
		divHref.href =hr;
		
		
	}
	
	function test()
	{
		
		var j=1;
		var t=2;
		imageId = 'thephoto';
		var imagePath=document.getElementById(imageId).src
		var hid=document.getElementById('hid').value;

		for(i=0;i<hid;i++,j++,t++)
		{
			
			if(imagePath==document.getElementById(j).src)
			{
		
				if(j==hid)
				{
					t=1;
				}
	
				document.getElementById('a'+j).style.filter = "alpha(opacity:50)";
				document.getElementById('a'+j).style.opacity=0.5;
				showPreview(document.getElementById(t).src,t,document.getElementById(t).name,'a'+t)
			}
	
		}
		

		
	}	
	
function test2()
	{


		imageId = 'thephoto';
		var imagePath=document.getElementById(imageId).src
		var hid=document.getElementById('hid').value;
		var j=hid;
		var t=j-1;
		
		for(i=hid;i>0;i--,j--,t--)
		{
			if(imagePath==document.getElementById(j).src)
			{
		
				if(j==1)
				{
					t=hid;
				}
				document.getElementById('a'+j).style.filter = "alpha(opacity:50)";
				document.getElementById('a'+j).style.opacity=0.5;
				showPreview(document.getElementById(t).src,t,document.getElementById(t).name,'a'+t)
			}
	
		}
}	
	function hideWaitMessageAndShowCaption(imageIndex)
	{
		document.getElementById('waitMessage').style.display='none';	
		document.getElementById('largeImageCaption').style.display='block';
		capId = 'largeImageCaption';
  		cap = document.getElementById('largeImageCaption');
		setOpacity(cap, 0);
  		cap.style.visibility = 'visible';
  		fadeIn(capId,0);
		document.getElementById('largeImageCaption').innerHTML = imageGalleryCaptions[imageIndex];
     
		
	}
	
	function setOpacity(obj, opacity) 
	{
		  opacity = (opacity == 100)?99.999:opacity;
		  
		  // IE/Win
		  obj.style.filter = "alpha(opacity:"+opacity+")";
		  
		  // Safari<1.2, Konqueror
		  obj.style.KHTMLOpacity = opacity/100;
		  
		  // Older Mozilla and Firefox
		  obj.style.MozOpacity = opacity/100;
		  
		  // Safari 1.2, newer Firefox and Mozilla, CSS3
		  obj.style.opacity = opacity/100;
}
function fadeIn(objId,opacity) 
{
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity <= 100) {
      setOpacity(obj, opacity);
      opacity += 10;
      window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 100);
    }
  }
}
	window.onload = initSlideShow;