if (document.images) {
	img1on = new Image();
	img1on.src = "images/logos/corp_ad/mclaren_on.gif";  
	img2on = new Image();
	img2on.src = "images/logos/corp_ad/laurent_on.gif";  
	img3on = new Image();
	img3on.src = "images/logos/corp_ad/johnjones_on.gif";	

	img1off = new Image();
	img1off.src = "images/bit.gif";  
	img2off = new Image();
	img2off.src = "images/bit.gif";  
	img3off = new Image();
	img3off.src = "images/bit.gif";  
}