function openWindow(url,winName,features) {
        if (navigator.appName == "Netscape") {
                dimensions = "width=500,height=292";
        } else if (navigator.appName == "Microsoft Internet Explorer" && os == "MacPPC") {
                dimensions = "width=510,height=276";
        } else if (navigator.appName == "Microsoft Internet Explorer") {
                dimensions = "width=500,height=292";
        }
popupWin =  window.open(url,winName,features + dimensions);

//return false;
}