var currentIndex = 0;

/** Scrolls through gift certificate images **/
function nextCertificateImage() {
    var currentCert = $('certificateImage' + currentIndex);
    currentIndex++;
    var nextCert = $('certificateImage' + currentIndex);
    if (nextCert == null) {
        // No more images so start again
        currentIndex = 0;
        nextCert = $('certificateImage' + currentIndex);
    }
    Effect.Fade(currentCert);
    var offsetArray = $('certificateImageContainer').cumulativeOffset();
    var x = offsetArray[0] + 485;
    var y = offsetArray[1] + 2;
    nextCert.style.left = x+"px";
    nextCert.style.top = y+"px";
    Effect.Appear(nextCert);
    setTimeout("nextCertificateImage()", 2000);
}

function showHelpPopUp(page) {
    $('helpContent').innerHTML = "<p>Please wait...</p>";
    var helpContainer = $('helpContainer');
    centerInViewport(helpContainer);
    helpContainer.show();
    $('viewDisabled').show();
    ajaxGateway.getPage(page, populateHelpContent);
}

function populateHelpContent(html) {
    $('helpContent').innerHTML = html;
}

function hideHelpPopUp() {
    $('helpContainer').hide();
    $('viewDisabled').hide();
}