var sNavName=String(navigator.userAgent);
var bType=0;

if (sNavName.indexOf('MSIE') != -1) bType=1;
if (sNavName.indexOf('Opera') != -1) bType=2;
if (sNavName.indexOf('Netscape') != -1) bType=3;
if (sNavName.indexOf('Mozilla') != -1) bType=3;

var loaded=false;
var visible=false;
var sDivName="Layer";
var sImgName="a";

function getPosX(obj) {
	if (!obj) return 0;
	return (obj.offsetLeft + getPosX(obj.offsetParent));
}

function getPosY(obj) {
	if (!obj) return 0;
	return (obj.offsetTop + getPosY(obj.offsetParent));
}

function enableMenu() {
	if (bType == 1 || bType == 2 || bType == 3 ) loaded = true;
}
function showMenu(id, event) {
	if (visible==id)return false;
	if (document.getElementById && loaded){
		if (bType==1 || bType==2 ){
			var obj = document.getElementById(sDivName+id);
			var img = document.getElementById(sImgName+id);
			if (! (obj && img)) return;
			obj.style.left = getPosX(img)-10;
			obj.style.top  = getPosY(img)-14;
		} else {
			var obj = document.getElementById(sDivName+id);
			var img = document.getElementById(sImgName+id);
			if (! (obj && img)) return;
			obj.style.left = getPosX(img);
			obj.style.top  = getPosY(img)+75;
		}

		hideMenu(visible);
		obj.style.visibility = 'visible';
		visible=id;
		event.cancelBubble = true;
		return true;
	}
}

function hideAll(event) {
	if (! (document.getElementById && loaded))return;
	var i=1;
	while (true){
		if (document.getElementById) {
			var obj = document.getElementById(sDivName+i);
			if (obj) { 
				obj.style.visibility = 'hidden';
				++i;
			} 
			else return;
		} else break;
	}
	visible=false;
}

function hideMenu(id, event) {
	if (! (document.getElementById && loaded))return;
	if (document.getElementById && visible)	{
		var divName= sDivName+id;
		var obj    = document.getElementById(divName);
		var toObj  = null;
		switch(bType) {
			case 1: toObj = event.toElement; break;
			case 2: toObj = event.relatedTarget; break;
		}
		if (toObj != null) {
			var p= toObj.parentElement;
			while (p) {
				if (p.id == divName) return;
				p = p.parentElement;
			}
		}
		if (obj) {
			obj.style.visibility = 'hidden';
			visible=false;
//			MM_swapImgRestore();
		}
	}
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}