pagename = document.location.href.substr(document.location.href.lastIndexOf('/')+1, document.location.href.length);
if(pagename.lastIndexOf('?') != -1) {
	pagename = pagename.substr(0, pagename.lastIndexOf('?'));
}
	
pagename = pagename.substr(0, pagename.lastIndexOf('.'));
if (pagename.toLowerCase() == '') {
	pagename = 'index';
}


window.onload = function() {
	id = "nav-" + pagename;
	document.getElementById(id.toLowerCase()).className = "active";
}