var ansWin = null;

function OpenWin(filename) {
var theLoc = "http://www.mcgrawhill.ca/college/olcsupport/" + filename;
if (!ansWin || ansWin.closed) {
	ansWin = window.open(theLoc,"","toolbar=NO,location=NO,resizable,scrollbars,width=480,height=600");
} else {
	ansWin.focus();
	ansWin.location = theLoc;
}
}