var timeout	= 500;
var closetimer = 0;
var ddmenuitem = 0;

function mopen(id) {	
	mcancelclosetime();
	
	if(ddmenuitem) { 
		ddmenuitem.style.visibility = 'hidden'; 
	}
 	
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';
}

function mclose() {
	if(ddmenuitem) { 
		ddmenuitem.style.visibility = 'hidden'; 
	}
}

function mclosetime() {
	closetimer = window.setTimeout(mclose, timeout);
}

function mcancelclosetime() {
	if(closetimer) {
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

function href(url,p) {
	if (p === true) { 
		parent.window.location.href = url;
	}
		else {
			window.location.href = url;
		}
}

document.onclick = mclose;