$(function(){
	$("td img").hover(function(){
		// hide all pictures except the last one
		$("#frame img").css("z-index", "0");
		// show the corresponding one
		// calculate the name of the current picture
		current = "#" + $(this).attr("id") + "big";
		// show current picture
		$(current).css("z-index", "1");
	},
	function() {
		// no code for mouseout
	});
});