An extracted version of the debounced resize function from John Hann, via Paul Irish

smartresize.js

// debouncing function from John Hann, via Paul Irish
// http://unscriptable.com/index.php/2009/03/20/debouncing-javascript-methods/
;(function(sr){
	var debounce = function (func, threshold, execAsap) {
		var timeout;
		return function debounced () {
			var obj = this, args = arguments;
			function delayed () {
				if (!execAsap)
					func.apply(obj, args);
				timeout = null;
			};
			if (timeout)
				clearTimeout(timeout);
			else if (execAsap)
				func.apply(obj, args);
			timeout = setTimeout(delayed, threshold || 100);
		};
	}
	// smartresize 
	$.fn[sr] = function(fn){  return fn ? this.bind('resize', debounce(fn)) : this.trigger(sr); };

})('smartresize');