function newimage(arg) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
}

function changeimages() {
    if (document.images && (preloadFlag == true)) {
        for (var i = 0; i < changeimages.arguments.length; i += 2) {
            document[changeimages.arguments[i]].src = changeimages.arguments[i + 1];
        }
    }
}

var preloadFlag = false;

function preloadimages() {
    if (document.images) {
        var tab0 = newimage("/Vending/pics/5_15_over.jpg");
        var tab1 = newimage("/Vending/pics/15_50_over.jpg");
        var tab2 = newimage("/Vending/pics/50_mais_over.jpg");
        preloadFlag = true;
    }
}

function openPopUpWindow(url, t, l, w, h) {
    window.open(url, 'EnviarSite', 'toolbar=no,height=' + h + ',top=' + t + ',left=' + l + ',width=' + w + ',location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no', 0);

}

function openPopUpWindowScroll(url, t, l, w, h) {
    window.open(url, 'EnviarSite', 'toolbar=no,height=' + h + ',top=' + t + ',left=' + l + ',width=' + w + ',location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no', 0);

}