function swapImg(objName,newImg){
		obj = document.getElementById(objName);
		obj.style.backgroundImage='url('+newImg+')';
	}

	function showLarge(newImg){
//		alert("showing larger version");
		obj = document.getElementById('large');
		
		i = newImg.lastIndexOf("/");
		dir = newImg.substr(0,i);
		dir = dir.substr(0,dir.lastIndexOf("/"));
		objname = newImg.substr(i+1);
		
		obj.src = dir+"/small/"+objname;	
//		alert(obj.src);	
	}