// +++++++++++++++++++++++++++++++++
function OpenWin(theLoc,width,height) {
var caSite = "http://www.mcgrawhill.ca/college/olcsupport/brealey3e/eSGproblems/" +  theLoc;

var cmd = "width=" +  width  + ",height=" + height  +  ",toolbar=NO,location=NO,resizable,scrollbars";

var theWin = window.open(caSite,"",cmd);
}

// +++++++++++++++++++++++++++++++++
function writeImg(url) {
document.write("<img src=\"" + url + "\" />");
}