Iframe mouseup check. If mouseup happened on outer document, fire it on this one

ui-iframe-mouseup.js

_mouseMove: function(event) {
  	// IE mouseup check - mouseup happened when mouse was out of window
	if ($.ui.ie && ( !document.documentMode || document.documentMode < 9 ) && !event.button) {
		return this._mouseUp(event);
	}
	// Iframe mouseup check.  If mouseup happened on outer document, fire it on this one
	else if (!event.which) {
		return this._mouseUp(event);
	}

	if (this._mouseStarted) {
		this._mouseDrag(event);
		return event.preventDefault();
	}

	if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
		this._mouseStarted =
			(this._mouseStart(this._mouseDownEvent, event) !== false);
		(this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
	}

	return !this._mouseStarted;
},

Thank you somuch its helped me a lot. but its not working in ie