/***********************************************************************************************
	
	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 = 'imagemagic.php?img=images/' + this.id + '.jpg';	
		if(this.id=='arrow_right'){
			slideSpeedMultiply = 5;//Math.floor((e.clientX - this.offsetLeft) / 1);
			slideSpeed = -1*slideSpeedMultiply;
			slideSpeed = Math.max(-10,slideSpeed);
		}else{			
			slideSpeedMultiply = 5;//10 - Math.floor((e.clientX - this.offsetLeft) / 1);
			slideSpeed = 1*slideSpeedMultiply;
			slideSpeed = Math.min(10,slideSpeed);
			if(slideSpeed<0)slideSpeed=10;
		}
	}
	
	function releaseSlide()
	{
		
		var id = this.id;
		this.getElementsByTagName('IMG')[0].src = 'imagemagic.php?img=images/' + this.id + '.jpg';
		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;	
		activeImage = this;	
	}
	
	function initSlideShow()
	{
		if(document.getElementById('arrow_left'))
		{
			
		
		
		document.getElementById('arrow_left').onmouseover = startSlide;
		document.getElementById('arrow_left').onmouseout = releaseSlide;
		document.getElementById('arrow_right').onmouseover = 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;
		}
		gallerySlide();
		}
	}
	
	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];
		
		if(displayWaitMessage){
			document.getElementById('waitMessage').style.display='inline';
		}
		document.getElementById('largeImageCaption').style.display='none';
		img.onload = function() { hideWaitMessageAndShowCaption(imageIndex-1); };
		img.src = 'imagemagic.php?img='+imagePath;
		
		
		 	    
      var imgHeight;
      var imgWidth;
	  var k;
	   var v;
      function findHHandWW() {
		 
      imgHeight = this.height;
	  v=imgHeight;
	  imgWidth = this.width;
	  k=imgWidth;
	
	
	curHeight = imgHeight;
        curWidth = imgWidth;
        
		heightx=272;
		 ratio = 272 / curHeight; 
         widthx = (curWidth * ratio); 
		
		if(widthx>396)
		{
			widthx=396;
		}
		if(widthx>curWidth)
		{
			widthx=curWidth;
		}
		if(heightx>curHeight)
		{
		    heightx=curHeight;
		}
	
	
	
	img.width=widthx;
		img.height=heightx;
	
	  return true;
      
	  }
      function showImage(imgPath) {
      var myImage = new Image();
      myImage.name = imgPath;
      myImage.onload = findHHandWW;
      myImage.src = imgPath;
     
	  
	 }
  	 
	 
	 
	  showImage(img.src);
		
		/*var newImgx = new Image();
        newImgx.src = img.src;
        
		curHeight = newImgx.Height;
        curWidth = newImgx.Width;
        
		heightx=272;
		 ratio = 272 / curHeight; 
         widthx = (curWidth * ratio); 
		if(widthx>396)
		{
			widthx=396;
		}
		if(widthx>curWidth)
		{
			widthx=curWidth;
		}
		if(heightx>curHeight)
		{
		    heightx=curHeight;
		}
		
		
		*/
		 

		

		
		//img.src = 'imagemagic.php?img='+imagePath;
	}
	function hideWaitMessageAndShowCaption(imageIndex)
	{
		document.getElementById('waitMessage').style.display='none';	
		document.getElementById('largeImageCaption').innerHTML = imageGalleryCaptions[imageIndex];
		document.getElementById('largeImageCaption').style.display='none';
		
	}
	//window.onload = initSlideShow;