function hidsubmenu(){
	var elist = document.getElementById("header_menucont").getElementsByTagName("SPAN");
	for (var i = 0; i < elist.length; i++) {
	var innerelem = elist[i];
	innerelem.style.display = 'none';
	}
}
function showmenu(elemname){
	var elem = document.getElementById(elemname);
	elem.style.display = 'block';
	document.getElementById('header_menucont').style.display = 'block';
}