var NAME_FILTER_THROTTLE_DELAY = 350;// ms

function throttle(fn, delay) {
		var timer = null;
		return function () {
			var context = this, args = arguments;
			clearTimeout( timer );
			timer = setTimeout( function(){ fn.apply( context, args ); }, delay );
		};
	}
//usage: throttle( eventHandlerName, NAME_FILTER_THROTTLE_DELAY );