flag = false;
function pulldownmenu1()
{
	if (flag) pdMENU1.style.visibility = "hidden"; else pdMENU1.style.visibility = "visible";
	flag = !flag;
}
function pulldownmenu2()
{
	if (flag) pdMENU2.style.visibility = "hidden"; else pdMENU2.style.visibility = "visible";
	flag = !flag;
}