$(document).ready(function(){
	$("a.graph").mouseover(function(){
			var name=$(this).find("img").attr("id");
			switch(name){
				case "upperLeft":
					var largeImage = $("div#largeimages").find("img.upperLeft");
					largeImage.addClass("upperLeftShow");
					largeImage.removeClass("upperLeft");
					largeImage.mouseout(function(){
						largeImage.addClass("upperLeft");
						largeImage.removeClass("upperLeftShow");
					});
					break;
				case "upperRight":
					var largeImage = $("div#largeimages").find("img.upperRight");
					largeImage.addClass("upperRightShow");
					largeImage.removeClass("upperRight");
					largeImage.mouseout(function(){
						largeImage.addClass("upperRight");
						largeImage.removeClass("upperRightShow");
					});
					break;
				case "lowerLeft":
					var largeImage = $("div#largeimages").find("img.lowerLeft");
					largeImage.addClass("lowerLeftShow");
					largeImage.removeClass("lowerLeft");
					largeImage.mouseout(function(){
						largeImage.addClass("lowerLeft");
						largeImage.removeClass("lowerLeftShow");
					});
					break;
				case "lowerRight":
					var largeImage = $("div#largeimages").find("img.lowerRight");
					largeImage.addClass("lowerRightShow");
					largeImage.removeClass("lowerRight");
					largeImage.mouseout(function(){
						largeImage.addClass("lowerRight");
						largeImage.removeClass("lowerRightShow");
					});
					break;
			}
	});
});