function windowOpener(url, name, args) {
    if (typeof(popupWin) != "object"){
        popupWin = window.open(url,name,args);
    } else {
        if (!popupWin.closed){ 
            popupWin.location.href = url;
        } else {
            popupWin = window.open(url, name,args);
        }
    }
    popupWin.focus();
}