function openmenu(menuID) {
        var divin = document.getElementById("divmenuid");
    	var uls = divin.getElementsByTagName("ul");
		if (uls[menuID-1].className=='mshow') {
			uls[menuID-1].className='mhidden';
		}
		else {
			for (i=0; i<uls.length; i++) {
				uls[i].className="mhidden";
            	uls[menuID-1].className='mshow';
			}
		}
}