$(document).ready(function(){
		var cur_state;
		$('#menu a img').hover(function(){
			cur_state = $(this).attr("src");
			//alert(cur_state)
			var pattern = /^([a-z0-9_\/]+)\./;
			var name = pattern.exec(cur_state);
			$(this).attr({'src':name[1]+'_over.jpg'});
		}, 
		function(){
			$(this).attr({'src':cur_state});
			
		})
	})