Fix for IE not firing the change event for certain inputs (namely, checkboxes and multiple select lists).

ieChangeFix.js

/**
 * Fixes binding the "change" event to checkboxes and select[type=multiple]
 * for Internet Explorer.
 *
 * @param {jQuery|Element|Element[]} elements
 *    The DOM Element we wish to bind the event to.
 *
 * @param {String} eventType
 *    The name of the event we want to bind to.
 *
 * @param {function} callback
 *    The function to execute when the event is triggered
 */
var bind = function(elements, eventType, callback) {
    var $elements = $(elements),
        rValidProps = /^(checked|selectedIndex)$/,
        hasPropertyChange = ("onpropertychange" in document.body);

    if (!$elements.length || typeof eventType !== "string") {
        return $elements;
    }

    if (eventType !== "change") {
        return $elements.bind(eventType, callback);
    }

    $elements.each(function() {
        eventType = hasPropertyChange && (this.type === "checkbox" || this.tagName.toLowerCase() === "select" && this.multiple) ? "propertychange" : "change";

        $(this).bind(eventType, function(e) {
            if (e.type !== "propertychange" || rValidProps.test(window.event.propertyName)) {
                callback.call(this, e);
            }
        });
    });
};

Demo: http://www.jsfiddle.net/kflorence/mMjp6/

Note: this seems to have been fixed in jQuery version 1.4.2, although select[multiple] elements still seem to be acting funny (it only fires every other change for some reason).

Related tickets: http://bugs.jquery.com/ticket/4659 and http://bugs.jquery.com/ticket/1360