function addEvent(obj, evType, fn) {
    if(obj.addEventListener) {
        obj.addEventListener(evType, fn, false);
        return true;
    } else if(obj.attachEvent) {
        return obj.attachEvent("on" + evType, fn);
    }
    return false;
}

/**
 * This is newsletter button handler
 * signs the user up onto silverstoneclassic newsletter
 *
 */
function signupForNewsletter()
{
    if ('' != document.getElementById('newsletterBox').value) {
        $.ajax({
            type: 'POST',
            url:  '/ajax/newsletter',
            data: 'email=' + document.getElementById('newsletterBox').value,
            success: function(msg)
            {
                if ('ok' == msg) {
                    window.location = 'http://www.silverstoneclassic.com/thank-you-for-subscribing-to-our-newsletter';
                } else {
                    alert(msg);
                }
            }
        });
    }
}

/**
 * Handles common on page load stuff
 *
 */
function commonOnLoad()
{
    // newsletter box

    document.getElementById('newsletterForm').onsubmit = function()
    {
        signupForNewsletter();
        return false;
    };

    var subscribeDefaultMessage = 'Enter your Email';
    document.getElementById('newsletterBox').value       = subscribeDefaultMessage;
    document.getElementById('newsletterBox').style.color = '#999999';
    document.getElementById('newsletterBox').onclick     = function()
    {
        if (subscribeDefaultMessage == this.value) {
            this.value       = '';
            this.style.color = 'black';
        }
    }
    document.getElementById('newsletterBox').onblur    = function()
    {
        if ('' == this.value) {
            this.value       = subscribeDefaultMessage;
            this.style.color = '#999999';
        }
    }

    document.getElementById('newsletterHref').href     = "javascript:signupForNewsletter();";

    // preloading menu hover images

    var a = new Image(); a.src = '/public/images/mainMenu/active/00-home.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/01-eventinfo.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/02-tickets.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/03-driverinfo.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/04-concerts.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/05-hd.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/06-carclubs.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/07-exhibitors.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/08-media.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/09-merchandise.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/10-contact.jpg';
}

/**
 * Handles common on page load stuff
 *
 */
function commonOnLoad_short()
{
    // preloading menu hover images

    var a = new Image(); a.src = '/public/images/mainMenu/active/00-home.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/01-eventinfo.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/02-tickets.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/03-driverinfo.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/04-concerts.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/05-hd.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/06-carclubs.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/07-exhibitors.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/08-media.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/09-merchandise.jpg';
    var a = new Image(); a.src = '/public/images/mainMenu/active/10-contact.jpg';
}