function preload_images(img_url) {

		
		if (document.images)
		{
			preload_image_object = new Image();

			for(var i=1; i<img_url.length; i++) { 
				preload_image_object.src = img_url[i]; 
			}

		}
	}

	function swap_bag_image(id) {
		
		document.getElementById('bag_image'+id).style.display = "block";
	}

	function clear_bag_image(id) {
	
		document.getElementById('bag_image'+id).style.display = "none";
	}