Backspace fix

$(function () {
    var rx = /INPUT|TEXTAREA/i;
    var rxT = /RADIO|CHECKBOX|SUBMIT|BUTTON/i;

    $(document).bind("keydown keypress", function (e) {
        var preventKeyPress = e.keyCode - 0 === 8;

        if (preventKeyPress && rx.test(e.target.tagName)) {
            var d = e.srcElement || e.target;
            preventKeyPress = d.readOnly || d.disabled || (d.attributes.type ? rxT.test(d.attributes.type.value) : false);
        }

        if (preventKeyPress) { e.preventDefault(); }
    });

});