function toggleOverlay() {
var overlay = document.getElementById('QNA');
overlay.style.display = (overlay.style.display == 'none') ? 'block' : 'none';
}
function applySelectedTo(link) {
	var ul = document.getElementById("qa"); 
	var allLinks = ul.getElementsByTagName("li"); 
	for (var i=0; i<allLinks.length; i++) {
		allLinks[i].className = ""; 
	}
	document.getElementById(link).className = "selected"; 
}
window.onload=function(){
	var url = document.URL;
	if(url.indexOf("#")>0){
		var tStr = url.split("#");
		applySelectedTo(tStr[1]);
	}
}