var currentMenu = 'submenu1';
function showhide(name) {
	if(currentMenu!=name) if(document.getElementById(currentMenu)) document.getElementById(currentMenu).style.display='none';
	if(document.getElementById(name)){
		if(document.getElementById(name).style.display=='none' || document.getElementById(name).style.display==''){
			if(document.all) document.getElementById(name).style.display='block';
			else document.getElementById(name).style.display='table';
		}
		else document.getElementById(name).style.display = 'none';
	}
	currentMenu = name;
}

function popup(mylink, windowname) {
	if (! window.focus)return true;
	var href;
	if (typeof(mylink) == 'string')
		href=mylink;
	else
		href=mylink.href;
	window.open(href, windowname, 'width=300,height=500,scrollbars=yes');
	return false;
}