function newImage(arg)
{
    if (document.images)
    {
        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)
    {
        startfreetrial_over = newImage("images/startfreetrial-over.gif");
        preloadFlag = true;
    } 
}

var theForm;
var requestSubmitted = false;
function disableButton(btn, form)
{
    if (!requestSubmitted)
    {
        var submitMessage = "Searching...";
        btn.value = submitMessage;
        theForm = form;
        btn.disabled = true;
        requestSubmitted = true;
        setTimeout("submitIt()", 250);
    }
    else { return false; } 
}
function submitIt() { theForm.submit(); return false; }

function popup(url, title, width, height)
{
    popupWin = window.open(url, title, "width=" + width + ",height=" + height + ",scrollbars=yes,toolbar=no,location=no,status=no,menubar=no,resizable=yes");
    popupWin.focus();
    return false;
}