showDropDown = function(aMenuId)
{
	var menu = document.getElementById(aMenuId);
	if(menu) menu.style.display = "block";
};
hideDropDown = function(aMenuId)
{
	var menu = document.getElementById(aMenuId);
	if(menu) menu.timer = setTimeout('document.getElementById("' + aMenuId + '").style.display="none"', 200);
};