function smexpand(id) {
	var x;
	if (id!=cursubmenu) {
		document.getElementById("sm"+id).style.display = "block";
		if (cursubmenu>0) {
			x=document.getElementById("sm"+cursubmenu);
			if(x) x.style.display = "none";
		}
		cursubmenu=id;
	} else {
		document.getElementById("sm"+id).style.display = "none";
		cursubmenu=0;
	}
}