function MM_preloadImages() { //v3.0
    var d = document;
    if (d.images) {

        if (!d.MM_p) d.MM_p = new Array();
        var i, j = d.MM_p.length, a = MM_preloadImages.arguments;
        for (i = 0; i < a.length; i++)
            if (a[i].indexOf("#") != 0) {
                d.MM_p[j] = new Image;
                d.MM_p[j++].src = a[i];
            }
    }
}

function winPopCenter(url, name, width, height, scroll, toolbar, menubar, resizable) {
    var winl = (screen.width - width) / 2;
    var wint = (screen.height - height) / 2;

    var strOpt = '';
    strOpt = "height=" + height + ",width=" + width + ",location=no,top=" + wint + ", left=" + winl;

    if (scroll == 1) strOpt += ',scrollbars=yes';
    else strOpt += ',scrollbars=no';
    if (toolbar == 1) strOpt += ',toolbar=yes';
    else strOpt += ',toolbar=no';
    if (menubar == 1) strOpt += ',menubar=yes';
    else strOpt += ',menubar=no';
    if (resizable == 1) strOpt += ',resizable=yes';
    else strOpt += ',resizable=no';

    var w = window.open(url, name, strOpt);
    w.focus();
}

function isValidEmail(str) {
    return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
}