var constructor = function() {
if ( !(document.all && document.getElementById && !window.opera && navigator.userAgent.toLowerCase().indexOf("mac") == -1) ) {
this.Apply = function() {};
this.Discard = function() {};
return;
}

var bIE55 = false;
var bIE6 = false;
var oRule = null;
var bSetup = true;
var oSelf = this;
this.Apply = function(vLayer, vContainer, bResize) {
if (bSetup) Setup();
if ( bIE55 && (oIframe = Hider(vLayer, vContainer, bResize)) ) {
oIframe.style.visibility = "visible";
} else if(oRule != null) {
oRule.style.visibility = "hidden";
}
};
this.Discard = function(vLayer, vContainer) {
if ( bIE55 && (oIframe = Hider(vLayer, vContainer, false)) ) {
oIframe.style.visibility = "hidden";
} else if(oRule != null) {
oRule.style.visibility = "visible";
}
};
function Hider(vLayer, vContainer, bResize) {
var oLayer = GetObj(vLayer);
var oContainer = ( (oTmp = GetObj(vContainer)) ? oTmp : document.getElementsByTagName("body")[0] );
if (!oLayer || !oContainer) return;
var oIframe = document.getElementById("hider" + oLayer.id);
if ( !oIframe ) {
var sFilter = (bIE6) ? "filter:progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0);" : "";
var zIndex = oLayer.style.zIndex;
if ( zIndex == "" ) zIndex = oLayer.currentStyle.zIndex;
zIndex = parseInt(zIndex);
if ( isNaN(zIndex) ) return null;
if (zIndex < 2) return null;
zIndex--;
var sHiderID = "hider" + oLayer.id;
oContainer.insertAdjacentHTML("afterBegin", '<iframe class="biframe" src="javascript:false;" id="' + sHiderID + '" scroll="no" frameborder="0" style="position:absolute;visibility:hidden;' + sFilter + 'border:0;top:0;left;0;width:0;height:0;background-color:#ccc;z-index:' + zIndex + ';"></iframe>');
oIframe = document.getElementById(sHiderID);
SetPos(oIframe, oLayer);
} else if (bResize) {
SetPos(oIframe, oLayer);
}
return oIframe;
};
function SetPos(oIframe, oLayer) {
oIframe.style.width = oLayer.offsetWidth + "px";
oIframe.style.height = oLayer.offsetHeight + "px";
oIframe.style.left = oLayer.offsetLeft + "px";
oIframe.style.top = oLayer.offsetTop + "px";
};
function GetObj(vObj) {
var oObj = null;
switch( typeof(vObj) ) {
case "object":
oObj = vObj;
break;
case "string":
oObj = document.getElementById(vObj);
break;}
return oObj;
};

function Setup() {
bIE55 = (typeof(document.body.contentEditable) != "undefined");
bIE6 = (typeof(document.compatMode) != "undefined");
if (!bIE55) {
if (document.styleSheets.length == 0)
document.createStyleSheet();
var oSheet = document.styleSheets[0];
oSheet.addRule(".hider", "visibility:visible");
oRule = oSheet.rules(oSheet.rules.length-1);
}
bSetup = false;
};
};
var selectHider = new constructor();

var disappeardelay=250  //menu disappear speed onMouseout (in miliseconds)
var enableanchorlink=1 //Enable or disable the anchor link when clicked on? (1=e, 0=d)
var hidemenu_onclick=1 //hide menu when user clicks within menu? (1=yes, 0=no)

var ie5=document.all
var ns6=document.getElementById&&!document.all

function getposOffset(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}

function showhide(obj, e, visible, hidden){
if (ie5||ns6)
dropmenuobj.style.left=dropmenuobj.style.top=-500
if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover"){
obj.visibility=visible;
}
else if (e.type=="click"){
obj.visibility=hidden;
}
}

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie5 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
}
else{
var windowedge=ie5 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
}
return edgeoffset
}

function dropdownmenu(obj, e, dropmenuID){
if (window.event) event.cancelBubble=true
else if (e.stopPropagation) e.stopPropagation()
if (typeof dropmenuobj!="undefined") //hide previous menu
{dropmenuobj.style.visibility="hidden";selectHider.Discard(dropmenuobj)}
clearhidemenu()
if (ie5||ns6){
obj.onmouseout=delayhidemenu
dropmenuobj=document.getElementById(dropmenuID)
if (hidemenu_onclick) dropmenuobj.onclick=function(){dropmenuobj.style.visibility='hidden';WCH.Discard(dropmenuobj)}
dropmenuobj.onmouseover=clearhidemenu
dropmenuobj.onmouseout=ie5? function(){ dynamichide(event)} : function(event){ dynamichide(event)}
showhide(dropmenuobj.style, e, "visible", "hidden")
dropmenuobj.x=getposOffset(obj, "left")
dropmenuobj.y=getposOffset(obj, "top")
dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")-15+"px"
dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+20+"px"
}
selectHider.Apply(dropmenuobj);
return clickreturnvalue()
}

function clickreturnvalue(){
if ((ie5||ns6) && !enableanchorlink) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie5&&!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function delayhidemenu(){
delayhide=setTimeout("dropmenuobj.style.visibility='hidden';selectHider.Discard(dropmenuobj);",disappeardelay)
}

function clearhidemenu(){
if (typeof delayhide!="undefined")
clearTimeout(delayhide)
}