function showmenu(elmnt)
{
document.getElementById(elmnt).style.visibility = 'visible'
}
function hidemenu(elmnt)
{
document.getElementById(elmnt).style.visibility = 'hidden'
}


function showmenu2(elmnt)
{
document.getElementById(elmnt).style.visibility = 'visible'
document.getElementById(elmnt).style.position = 'relative'
}
function hidemenu2(elmnt)
{
document.getElementById(elmnt).style.visibility = 'hidden'
document.getElementById(elmnt).style.position = 'absolute'
}