/***********************************************************************************************
	
	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 activeImageMod = false;
	var imageGalleryLeftPosMod = false;
	var imageGalleryWidthMod = false;
	var imageGalleryObjMod = false;
	var maxGalleryXPosMod = false;
	var slideSpeedMod = 0;
	var imageGalleryCaptionsMod = new Array();
		
	function gallerySlideMod()
	{
		if(slideSpeedMod!=0){
			var leftPos = imageGalleryObjMod.offsetLeft;
			leftPos = leftPos/1 + slideSpeedMod;
			if(leftPos>maxGalleryXPosMod){
				leftPos = maxGalleryXPosMod;
				slideSpeedMod = 0;
				
			}
			if(leftPos<minGalleryXPos){
				leftPos = minGalleryXPos;
				slideSpeedMod=0;
			}
			
			imageGalleryObjMod.style.left = leftPos + 'px';
		}
		setTimeout('gallerySlideMod()',20);
		
	}
	
	function showImageMod()
	{
		if(activeImageMod){
			activeImageMod.style.filter = 'alpha(opacity=75)';	
			activeImageMod.style.opacity = 0.75;
		}	
		this.style.filter = 'alpha(opacity=100)';
		this.style.opacity = 1;	
		activeImageMod = this;	
	}
	
	function initSlideShowMod()
	{
		document.getElementById('arrow_left').onmousemove = startSlideMod;
		document.getElementById('arrow_left').onmouseout = releaseSlideMod;
		document.getElementById('arrow_right').onmousemove = startSlideMod;
		document.getElementById('arrow_right').onmouseout = releaseSlideMod;
		
		imageGalleryObjMod = document.getElementById('theImages');
		imageGalleryLeftPosMod = imageGalleryObjMod.offsetLeft;
		imageGalleryWidthMod = document.getElementById('galleryContainer').offsetWidth - 80;
		maxGalleryXPosMod = imageGalleryObjMod.offsetLeft; 
		minGalleryXPos = imageGalleryWidthMod - document.getElementById('slideEnd').offsetLeft;
		var slideshowImageMods = imageGalleryObjMod.getElementsByTagName('IMG');
		for(var no=0;no<slideshowImageMods.length;no++){
			slideshowImageMods[no].onmouseover = showImageMod;
		}
		
		var divs = imageGalleryObjMod.getElementsByTagName('DIV');
		for(var no=0;no<divs.length;no++){
			if(divs[no].className=='imageCaption')imageGalleryCaptionsMod[imageGalleryCaptionsMod.length] = divs[no].innerHTML;
		}
		gallerySlideMod();
	}
	
	function showPreviewMod(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];
		
		if(displayWaitMessage){
			document.getElementById('waitMessage').style.display='inline';
		}
		document.getElementById('largeImageCaption').style.display='none';
		img.onload = function() { hideWaitMessageAndShowCaptionMod(imageIndex-1); };
		img.src = imagePath;
		
	}
	function hideWaitMessageAndShowCaptionMod(imageIndex)
	{
		document.getElementById('waitMessage').style.display='none';	
		document.getElementById('largeImageCaption').innerHTML = imageGalleryCaptionsMod[imageIndex];
		document.getElementById('largeImageCaption').style.display='block';
		
	}
	window.onload = initSlideShowMod;