/*
*
* code for dynamic presentation of quiz answer material
* adapted from O'Reilly's _Javascript and DHTML Cookbook_ by Danny Goodman
* 
*/

function setUnHidden(evt) {
	evt = (evt) ? evt : ((window.event) ? window.event : null);
	if (evt) {
		var elem = (evt.srcElement) ? evt.srcElement : evt.target;
		elem.className = "unhidden";
	}
}
function setHidden(evt) {
	evt = (evt) ? evt : ((window.event) ? window.event : null);
	if (evt) {
		var elem = (evt.srcElement) ? evt.srcElement : evt.target;
		elem.className = "hidden";
	}
}