function switch_smenu(sname) {
	var smenus = new Array("m1","m2","m3","m4","m5","m6","m7","m8","m9");
	for (i=0; i<smenus.length; i++)
	{
		if (sname==smenus[i]){
			document.getElementById(smenus[i]).style.display='block';
		}else{
			document.getElementById(smenus[i]).style.display='none';
		}
	}
}