if (document.images) {
		// even number are ON and odd numbers are OFF
		but0		= new Image();
		but0.src	= "images/about_on.gif";
		but1		= new Image();
		but1.src	= "images/about_off.gif";
		but2		= new Image();
		but2.src	= "images/services_on.gif"; // MH 3/7/09 changed button name to Services since new button
		but3		= new Image();
		but3.src	= "images/services_off.gif"; // MH 3/7/09 changed button name to Services since new button
		but4		= new Image();
		but4.src	= "images/careers_on.gif";
		but5		= new Image();
		but5.src	= "images/careers_off.gif";
		but6		= new Image();
		but6.src	= "images/contact_on.gif";
		but7		= new Image();
		but7.src	= "images/contact_off.gif";
		but8		= new Image();
		but8.src	= "images/resources_on.gif";
		but9		= new Image();
		but9.src	= "images/resources_off.gif";
		but10		= new Image();
		but10.src	= "images/search_on.gif";
		but11		= new Image();
		but11.src	= "images/search_off.gif";
		/* MH 3/28/2009*/
		but12		= new Image();
		but12.src	= "images/home_on.gif";
		but13		= new Image();
		but13.src	= "images/home_off.gif";
		but14		= new Image();
		but14.src	= "images/downloads_on.gif";
		but15		= new Image();
		but15.src	= "images/downloads_off.gif";
	}
	
	function rollover(imgName,imgChange) {
		if (document.images) { document.images[imgName].src = eval(imgChange + ".src"); }
	}