var mainNav=function(){var main={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(obj,level){obj.lists=obj.childElements();obj.lists.each(function(el,ind){main.handlNavElement(el);if((main.settings._ie6||main.settings._ie7)&&level){main.ieFixZIndex(el,ind,obj.lists.size());}});if(main.settings._ie6&&!level){document.execCommand("BackgroundImageCache",false,true);}},handlNavElement:function(list){if(list!==undefined){list.onmouseover=function(){main.fireNavEvent(this,true);};list.onmouseout=function(){main.fireNavEvent(this,false);};if(list.down("ul")){main.init(list.down("ul"),true);}}},ieFixZIndex:function(el,i,l){if(el.tagName.toString().toLowerCase().indexOf("iframe")==-1){el.style.zIndex=l- i;}else{el.onmouseover="null";el.onmouseout="null";}},fireNavEvent:function(elm,ev){if(ev){elm.addClassName("over");elm.down("a").addClassName("over");if(elm.childElements()[1]){main.show(elm.childElements()[1]);}}else{elm.removeClassName("over");elm.down("a").removeClassName("over");if(elm.childElements()[1]){main.hide(elm.childElements()[1]);}}},show:function(sub_elm){if(sub_elm.hide_time_id){clearTimeout(sub_elm.hide_time_id);}
sub_elm.show_time_id=setTimeout(function(){if(!sub_elm.hasClassName("shown-sub")){sub_elm.addClassName("shown-sub");}},main.settings.show_delay);},hide:function(sub_elm){if(sub_elm.show_time_id){clearTimeout(sub_elm.show_time_id);}
sub_elm.hide_time_id=setTimeout(function(){if(sub_elm.hasClassName("shown-sub")){sub_elm.removeClassName("shown-sub");}},main.settings.hide_delay);}};if(arguments[1]){main.settings=Object.extend(main.settings,arguments[1]);}
if(main.obj_nav){main.init(main.obj_nav,false);}};document.observe("dom:loaded",function(){mainNav("nav",{"show_delay":"100","hide_delay":"100"});});