var preloaded_images = new Array();

	function preload(large_image)
	{
	var preloaded_images_number = preloaded_images.length;
	preloaded_images[preloaded_images_number] = new Image();
	preloaded_images[preloaded_images_number].src = large_image;
	}

	function pop_up(position)
	{
	var height = preloaded_images[position].height + 25;
	var width = preloaded_images[position].width + 25;
	window.open(preloaded_images[position].src, 'MyPopUp','width='+width+', height='+height+',toolbar=0,scrollbars=0,screenX=200,screenY=200,left=200,top=200');
	}