var popUpWin;
var isIE3;
var isIE3 = (navigator.appVersion.indexOf("MSIE 3") != -1) ? true : false;

function openWindow(url) {
        popUpWin = window.open(url,popUpWin,"height=470,width=500,channelmode=0,dependent=1,directories=0,fullscreen=0,location=0, menubar=0,resizable=no,scrollbars=no,status=0,toolbar=0", "pop");
        if (popUpWin.opener == null) {
                popUpWin.opener = window;
        }       
        if (navigator.appName == 'Netscape') {
        popUpWin.focus();
        }
}
function closeWindow() {

        if (isIE3) {
                popUpWin = window.open("/blank.html","TechSpecs","toolbar=no,location=0,directories=0,status=no,menubar=no,scrollbars=no,resizable=no,height=1,width=1");
        }
        
        if (popUpWin && !popUpWin.closed) {
                popUpWin.close();
        }
        popUpWin = "";
}