YUI: DragDrop Proxy - Select Element

This code fixes the issue with dragging a DDProxy over a select element.

The Javascript

(function() {
    var Dom = YAHOO.util.Dom,
        Event = YAHOO.util.Event;

YAHOO.util.DDProxy.prototype._createFrame = YAHOO.util.DDProxy.prototype.createFrame;
    YAHOO.util.DDProxy.prototype.createFrame = function() {
        this._createFrame.apply(this, arguments);
        var div = this.getDragEl();
        if (YAHOO.env.ua.ie) {
            //Only needed for Internet Explorer
            var ifr = document.createElement('iframe');
            ifr.setAttribute('src', 'javascript:false;');
            ifr.setAttribute('scrolling', 'no');
            ifr.setAttribute('frameborder', '0');
            div.insertBefore(ifr, div.firstChild);
            YAHOO.util.Dom.setStyle(ifr, 'height', '100%');
            YAHOO.util.Dom.setStyle(ifr, 'width', '100%');
            YAHOO.util.Dom.setStyle(ifr, 'position', 'absolute');
            YAHOO.util.Dom.setStyle(ifr, 'top', '0');
            YAHOO.util.Dom.setStyle(ifr, 'left', '0');
            YAHOO.util.Dom.setStyle(ifr, 'opacity', '0');
            YAHOO.util.Dom.setStyle(ifr, 'zIndex', '-1');
            YAHOO.util.Dom.setStyle(ifr.nextSibling, 'zIndex', '2');
        }
    };

(new YAHOO.util.DDProxy('dd')).endDrag = function() {
        alert(YAHOO.lang.dump(arguments));
    };

})();