var theURL = 'http://improveirs.org';
var width = 600;
var height = 400;
function popWindow(theURL) {
    newWindow = window.open(theURL, 'newWindow', 'toolbar=yes,menubar=yes,resizable=yes,scrollbars=yes,status=yes,location=yes,left=375,top=200,width=' + width + ',height=' + height);
}