function UL2Menu_ShowHead(){
	var li=this;
	AddClass(li,"active");
	var xy=FindXYWH(li);
	if(li.isTop) {
		li.sub.style.left=(xy.x+(!li.isHorizontal?xy.w:0))+"px";
		li.sub.style.top=(xy.y+(li.isHorizontal?xy.h:0)-(li.isTop?0:1))+"px";
	} else {
		li.sub.style.left=li.offsetWidth+"px";
		li.sub.style.top=li.offsetTop+"px";
	}
	li.sub.style.visibility="visible";
}

function UL2Menu_HideHead() {
	var li=this;
	li.sub.style.visibility="hidden";
	KillClass(li,"active");
}

function UL2Menu_ConvertMenu() {
	var menu = document.getElementById("menu");
	if(!menu) {
		return;
	}
	var menuIsHorizontal=HasClass(menu,"horizontal");
	var lis = menu.getElementsByTagName("li");
	for(var i=0,len=lis.length;i<len;i++) {
		var li=lis[i];
		var uls = li.getElementsByTagName("ul");
		if(!uls || uls.length==0) {
			continue;
		}
		var ul=uls[0];
		li.sub=ul;
		li.onmouseover=UL2Menu_ShowHead;
		li.onmouseout=UL2Menu_HideHead;
		li.isTop = li.parentNode==menu;
		li.isHorizontal = (menuIsHorizontal && li.isTop);
		if(li.addedArrow || li.isTop) {
			continue;
		}
		var arrow=document.createElement("span");
		arrow.innerHTML="&nbsp;&rArr;";
		var a = li.getElementsByTagName("a");
		if(a && a.length>0 && a[0].parentNode==li) {
			a[0].innerHTML+="&nbsp;&raquo;";
		} else {
			li.insertBefore(arrow,li.childNodes[1]);
		}
		li.addedArrow=true;
	}
}

AttachEvent(window,"load",UL2Menu_ConvertMenu,true);

//***Generic Library Functions Follow
function FindXY(obj){
	var x=0,y=0;
	while (obj){
		x+=obj.offsetLeft - (obj.scrollLeft || 0);
		y+=obj.offsetTop - (obj.scrollTop || 0);
		obj=obj.offsetParent;
	}
	return {x:x,y:y};
}

function FindXYWH(obj){
	if(!obj) {
		return { x:0, y:0, w:0, h:0 };
	}
	var objXY = FindXY(obj);
	return { x:objXY.x, y:objXY.y, w:obj.offsetWidth||0, h:obj.offsetHeight||0 };
}

function AttachEvent(obj,evt,fnc,useCapture){
	if(obj.addEventListener) {
		obj.addEventListener(evt,fnc,useCapture);
		return true;
	} else if (obj.attachEvent) {
		return obj.attachEvent("on"+evt,fnc);
	} else {
		obj["on"+evt]=fnc;
	}
	return true;
}

function HasClass(obj,cName) { return (!obj || !obj.className)?false:(new RegExp("\\b"+cName+"\\b")).test(obj.className) }
function AddClass(obj,cName) { if (!obj) return; if (obj.className==null) obj.className=''; return obj.className+=(obj.className.length>0?' ':'')+cName; }
function KillClass(obj,cName) { if (!obj) return; return obj.className=obj.className.replace(RegExp("^"+cName+"\\b\\s*|\\s*\\b"+cName+"\\b",'g'),''); }