$(document).ready(function(){
	$("#menu a").hover(
		function(){
			if(this.className == "active") return;
			var newImg = $(this).find("img").attr("src").replace(/\_i.gif$/, '_a.gif');
			$(this).find("img").attr("src", newImg);
		},
		function(){
			if(this.className == "active") return;
			var newImg = $(this).find("img").attr("src").replace(/\_a.gif$/, '_i.gif');
			$(this).find("img").attr("src", newImg);
		}
	);
});