widget-proxy.js

$.fn.widget = function( widget, options ) {
	var isMethodCall = typeof widget === "string",
		widgetName = widget.prototype.name,
		args = [].slice.call( arguments, 2 );

	return this.each( isMethodCall ?
		function() {
			var instance = $( this ).data( name );
			instance[ options ].apply( instance, args );
		} :
		function() {
			widget( options, this );
		});
};