// times in milliseconds
var timeout	= 200;
var closetimer	= 0;
var ddmenuitem	= 0;
// open hidden layer
function mopen(id){	
	// cancel close timer
	mcancelclosetime();
	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';
}
function menuclass(id2){
	ddmenuitem2 = document.getElementById(id2);
	ddmenuitem2.className = 'MenuBarItemHighlight';
}
function menuclassout(id3){
	ddmenuitem3 = document.getElementById(id3);
	ddmenuitem3.className = 'MenuBarItem';
}
// close showed layer
function mclose(){
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}
// go close timer
function mclosetime(){
	closetimer = window.setTimeout(mclose, timeout);
}
// cancel close timer
function mcancelclosetime(){
	if(closetimer){
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}
// close layer when click-out
document.onclick = mclose;