function showDetails(category, itemName, itemDescription)
		{
			SH('popup', 'block');
			header = document.getElementById('bigheader');
			header.innerHTML = itemDescription;
		
			bgimage = document.getElementById('bgimages');
			bgimage.src = 'images/' + category + '/' + itemName;
			
		}

		
		function SH(id, block) 
		{	 
    	obj = document.getElementsByTagName("div"); 
    	obj[id].style.display = block;
		}		

		var lastactive = null;

		function seton(img)
			{ img.src = img.src.replace(/\.gif/, "_over.gif"); }
		
		function setoff(img)
			{ img.src = img.src.replace(/\_over.gif/, ".gif"); }
			
		function setactive(img)
			{ 	
				img.src = img.src.replace(/\_over.gif/, "_clicked.gif");
				lastactive = img;				
			}			
			
		function setactive_off(img)
		{ 
			img = lastactive;
		
			if (img != null)
			{
			if(img.src.indexOf("over") > 0)
			{
			img.src = img.src.replace(/\_over.gif/, ".gif"); 
			} else if(img.src.indexOf("clicked") > 0)
			{
			img.src = img.src.replace(/\_clicked.gif/, ".gif"); 
			}
			} 
		}