function openSwitchMenu(containername,submenuid,classname) {
	if ( document.getElementById ) {
		var el = document.getElementById(submenuid);
		var ar = document.getElementById(containername).getElementsByTagName("span"); 
		if ( el.style.display != "block" ){ 
			for ( var i = 0; i < ar.length; i++ ){
				if (ar[i].className == classname ) {
					ar[i].style.display = "none";
				}
			}
			el.style.display = "block";
		} else {
			el.style.display = "none";
		}
	}
}