function ShowSubMenu (Source, Nr)
{
SubMenu2 = "";
switch (Nr)
{
case 2: document.getElementById('MenuSub').innerHTML = SubMenu2;
break;
default: return; break;}
document.getElementById('MenuSub').style.visibility = 'visible';
document.getElementById('MenuSub').style.left = (Source.offsetLeft - 2) + 'px';
document.getElementById('MenuSub').style.top = (Source.offsetTop + Source.offsetHeight - 1) + 'px';
document.getElementById('MenuSub').style.width = (Source.offsetWidth + 2) + 'px';
}
function HideSubMenu ()
{
document.getElementById('MenuSub').style.visibility = 'hidden';
}