$(document).ready(function(){ //alert('document ready');

	//preload --------
	function preload(arrayOfImages) {
		$(arrayOfImages).each(function(){
			(new Image()).src = this; //$('<img/>')[0].src = this;
		});
	}
	preload([
		'_images/btn_corporate_off.jpg',
		'_images/btn_standup_off.jpg',
		'_images/btn_creative_off.jpg'
		'_images/btn_corporate_on.jpg',
		'_images/btn_standup_on.jpg',
		'_images/btn_creative_on.jpg'
	]);

	//image rollovers --------
	$(".imglink img").hover(
		function() { this.src = this.src.replace("_off","_on"); },
		function() { this.src = this.src.replace("_on","_off"); }
	);	

});