var mainNav=function(){var b="shown-sub",a={obj_nav:$(arguments[0])||$("nav"),settings:{show_delay:0,hide_delay:0,_ie6:/MSIE 6.+Win/.test(navigator.userAgent),_ie7:/MSIE 7.+Win/.test(navigator.userAgent)},init:function(b,c){b.lists=b.childElements();b.lists.each(function(d,e){a.handlNavElement(d);(a.settings._ie6||a.settings._ie7)&&c&&a.ieFixZIndex(d,e,b.lists.size())});a.settings._ie6&&!c&&document.execCommand("BackgroundImageCache",false,true)},handlNavElement:function(b){if(b!==undefined){b.onmouseover=function(){a.fireNavEvent(this,true)};b.onmouseout=function(){a.fireNavEvent(this,false)};b.down("ul")&&a.init(b.down("ul"),true)}},ieFixZIndex:function(a,b,c){if(a.tagName.toString().toLowerCase().indexOf("iframe")==-1)a.style.zIndex=c-b;else{a.onmouseover="null";a.onmouseout="null"}},fireNavEvent:function(b,d){	var c="over";		if(d){b.addClassName(c);		b.down("a").addClassName(c);	b.childElements()[1]&&a.show(b.childElements()[1])}else{b.removeClassName(c);	b.down("a").removeClassName(c);	b.childElements()[1]&&a.hide(b.childElements()[1])}},	show:function(c){c.hide_time_id&&clearTimeout(c.hide_time_id);	c.show_time_id=setTimeout(function(){!c.hasClassName(b)&&c.addClassName(b)},a.settings.show_delay)},hide:function(c){c.show_time_id&&clearTimeout(c.show_time_id);	c.hide_time_id=setTimeout(function(){c.hasClassName(b)&&c.removeClassName(b)},a.settings.hide_delay)}};	if(arguments[1]) a.settings=Object.extend(a.settings,arguments[1]);	a.obj_nav&&a.init(a.obj_nav,false)};	document.observe("dom:loaded",function(){mainNav("nav",{show_delay:"100",hide_delay:"100"})});