$(document).ready(function(){
	$("#menu_nmed a").mouseover(function(){
		var currentMenuNo = parseInt(this.id.substring(1));
		$("#secondnav_nmed div").each(function(){
			$(this).hide();
			$("#subnav"+currentMenuNo).show();
			$("#subnav"+currentMenuNo).attr("class","mleft"+currentMenuNo);
		});
	});
});