function returnObjById( id )
{
    if (document.getElementById)
        var returnVar = document.getElementById(id);
    else if (document.all)
        var returnVar = document.all[id];
    else if (document.layers)
        var returnVar = document.layers[id];
    return returnVar;
}


function ShowMenu(){
	
	var s = returnObjById('submenu');
	s.style.display="block";
}

function HideMenu(){
	
	var s = returnObjById('submenu');
	s.style.display="none";
}