jQuery(document).ready(function(){
		var openUL;
		var catchTimer;

		jQuery("ul.sub_nav").animate({ opacity:0.9 });
		jQuery("li.nav_main_link").bind("mouseenter", function() {
			clearTimeout(catchTimer);
			openUL = jQuery(this).children("ul");
			jQuery(this).addClass("on");
			jQuery("li.nav_main_link").children("ul:visible").not(openUL).hide();
			jQuery(this).children("ul").fadeIn(350);
			catchTimer = setTimeout(function() { jQuery("li.nav_main_link:not(.on)").children("ul:visible").hide(); }, 1000);
   		});
		jQuery("li.nav_main_link").bind("mouseleave", function() { jQuery(this).children("ul:visible").hide();jQuery(this).removeClass("on"); });
	});