function $(id) {
	return document.getElementById(id);
}
function nav_open(menu) {
	if ($('lnav_' + menu).style.display == 'block')
		nav_close();
	else {
		nav_close();
		$('lnav_' + menu).style.display = 'block';
	}
}
function nav_close() {
	eleUL = document.getElementsByTagName('ul');
	for (i=0; i<eleUL.length; i++)
		if (eleUL[i].id.indexOf('lnav_') != -1)
			eleUL[i].style.display = 'none';
}
function fbs_click(u,t) {
	window.open('http://www.facebook.com/sharer.php?u='+encodeURIComponent(u)+'&t='+encodeURIComponent(t),'sharer','toolbar=0,status=0,width=626,height=436');
	return false;
}