var disappeardelay=250  //menu disappear speed onMouseout (in miliseconds)
var enableanchorlink=0 //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
var paddingTopLink = 9

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 (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 dropdownmenu(obj, e, dropmenuID){
	if (window.event) event.cancelBubble=true
	else if (e.stopPropagation) e.stopPropagation()
	
	if (typeof dropmenuobj!="undefined"){ //hide previous menu
		if (dropmenuobj.id != dropmenuID){
			hidemenu()
		}
	}	
	clearhidemenu()
	
	if (ie5||ns6){
		obj.onmouseout=delayhidemenu
		dropmenuobj=document.getElementById(dropmenuID)
		if (hidemenu_onclick) dropmenuobj.onclick=function(){dropmenuobj.style.visibility='hidden'}
		dropmenuobj.onmouseover=clearhidemenu
		dropmenuobj.onmouseout=ie5? function(){ dynamichide(event)} : function(event){ dynamichide(event)}
		//POSIZIONO LA TENDINA
		dropmenuobj.style.left = getposOffset(obj, "left") + 'px'
		dropmenuobj.style.top = getposOffset(obj, "top")+ obj.offsetHeight - paddingTopLink + 'px'
		//VISUALIZZO LA TENDINA
		showhide(dropmenuobj.style, e, "visible", "hidden")
		//NASCONDO EVENTUALI SELECT
		showhidectrl(dropmenuobj, "hidden")
	}
	
	return clickreturnvalue()
}

function showhidectrl(obj, visible){	
	if (ie5){
		if (typeof obj !="undefined"){		
			if (obj.id == 'menu-vetrina01'){
//				document.getElementById('Destinazione').style.visibility=visible;
				setVisibility('Destinazione', visible);
				setVisibility('paese', visible);
				setVisibility('ordinamento', visible);
				setVisibility('tipologia', visible);
			}
			if (obj.id == 'menu-vetrina02'){
//				document.getElementById('Tipo_Offerta').style.visibility=visible;
//				document.getElementById('Ordine').style.visibility=visible;
				setVisibility('Tipo_Offerta', visible);
				setVisibility('Ordine', visible);
				setVisibility('regione', visible);
			}
			if (obj.id == 'menu-vetrina03'){
//				document.getElementById('da_g').style.visibility=visible;
//				document.getElementById('da_m').style.visibility=visible;
//				document.getElementById('da_a').style.visibility=visible;
//				document.getElementById('a_g').style.visibility=visible;
//				document.getElementById('a_m').style.visibility=visible;
//				document.getElementById('a_a').style.visibility=visible;
          setVisibility('da_g', visible);
          setVisibility('da_m', visible);
          setVisibility('da_a', visible);
          setVisibility('a_g', visible);
          setVisibility('a_m', visible);
          setVisibility('a_a', visible);
          setVisibility('localita', visible);
          setVisibility('portale', visible);
			}
		}
	}
}

function setVisibility(id, visible){
  obj = document.getElementById(id);
  
  if (obj){
    obj.style.visibility=visible;
  }
}

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("hidemenu()",disappeardelay)
}

function hidemenu(){
	if (typeof dropmenuobj !="undefined"){
		dropmenuobj.style.visibility='hidden'
		showhidectrl(dropmenuobj, 'visible')
	}
}

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