var timer
function scrolltop()
{
document.getElementById('scrollmenu').style.top=document.body.scrollTop
timer=setTimeout("scrolltop()",0)
}

function stoptimer()
{
clearTimeout(timer)
}

function menupop(elmnt)
{
document.getElementById(elmnt).style.visibility="visible"
}

function delayhidemenu()
{
 setTimeout("hidemenu()",2500); 
 } 

function hidemenu()
{
document.getElementById('genealogy').style.visibility="hidden"
}