event.preventDefault() function not working in IE

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Following is my JavaScript (mootools) code:

$('orderNowForm').addEvent('submit', function (event) {
    event.preventDefault();
    allFilled = false;
    $$(".required").each(function (inp) {
        if (inp.getValue() != '') {
            allFilled = true;
        }
    });

    if (!allFilled) {
        $$(".errormsg").setStyle('display', '');
        return;
    } else {
        $$('.defaultText').each(function (input) {
            if (input.getValue() == input.getAttribute('title')) {
                input.setAttribute('value', '');
            }
        });
    }

    this.send({
        onSuccess: function () {
            $('page_1_table').setStyle('display', 'none');
            $('page_2_table').setStyle('display', 'none');
            $('page_3_table').setStyle('display', '');
        }
    });
});

In all browsers except IE, this works fine. But in IE, this causes an error. I have IE8 so while using its JavaScript debugger, I found out that the event object does not have a preventDefault method which is causing the error and so the form is getting submitted. The method is supported in case of Firefox (which I found out using Firebug).

Any Help?

11 Answers
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