var goMenuTimeout = new Object;
var goMenuActive = new Object;
function goMenuStart(item) {
	if ( goMenuActive[item] ) {
		clearTimeout(goMenuTimeout[item]);
		return;
	}

	goMenuTimeoutActive() ;
	
	var menu = document.getElementById('go_dropdown_menu_' + item) ;
	var parentMenu = document.getElementById('go_menu_' + item);
	var pos = findPos(parentMenu);
	var dim = getHeight(parentMenu);

	menu.style.display = "" ;
	menu.style.position = "absolute" ;
	menu.style.top = (parseInt(pos[1]) + parseInt(dim) + 2) + "px" ;
	menu.style.left = parseInt(pos[0]) + "px" ;

	goMenuActive[item] = true ;
}
function goMenuBeginTimeout(item) {
	if ( goMenuTimeout[item] ) {
		clearTimeout(goMenuTimeout[item]);
	}
	goMenuTimeout[item] = setTimeout('goMenuStop('+item+')', 250) ;
}
function goMenuStop(item) {
	var menu = document.getElementById('go_dropdown_menu_' + item);
	if ( menu ) {
		menu.style.display = "none" ;
	}
	clearTimeout(goMenuTimeout[item]) ;
	goMenuActive[item] = false ;
}
function goMenuTimeoutActive() {
	for ( var i in goMenuActive ) {
		if ( goMenuActive[i] ) {
			goMenuStop(i) ;
		}
	}
}