var timeout	= 500;
var closetimer	= 0;
var divname= 0;
function menushow(name){
menunoshow()
divname=name;
mcancelclosetime();
document.getElementById(name).style.visibility="visible";
}

function menunoshow(){
if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
if(divname!=0){
document.getElementById(divname).style.visibility="hidden"; }
divname=0;
}

function menusubmenu(a){
document.getElementById(a).style.backgroundImage="url('images/dr_bckgr1.jpg')";
document.getElementById(a).style.backgroundRepeat="repeat-x";
}
function menusubmenuback(a){
document.getElementById(a).style.backgroundImage="url('images/dr_bckgr.jpg')";
document.getElementById(a).style.backgroundRepeat="repeat-x";
}
//start timer
function mclosetime()
{
	closetimer = window.setTimeout("menunoshow()", timeout);
}

// cancel close timer
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}