function imgswap(img_name, img_src) {
	document[img_name].src = img_src;
}

function cacheimages() {
	var img1 = new Image; img1.src="images-core/bio1.jpg";
	var img2 = new Image; img2.src="images-core/public-speaking.jpg";
	var img3 = new Image; img3.src="images-core/network.jpg";
	var img4 = new Image; img4.src="images-core/resources.jpg";
	var img5 = new Image; img5.src="images-core/programs.jpg";
	var img6 = new Image; img6.src="images-core/contact.jpg";
	var img7 = new Image; img7.src="images-core/blog.jpg";
	var img8 = new Image; img8.src="images-core/seminars.jpg";
	var img9 = new Image; img9.src="images-core/testimonials.jpg";
}