<!-- hide script from old browsers
	img1_on = new Image(215,50);
	img1_on.src="./img/AtPacMathLogoOver.gif";
	img1_off = new Image(215,50);
	img1_off.src="./img/AtPacMathLogo.gif";
	function over_image(parm_name) {document[parm_name].src = eval(parm_name + "_on.src");}
	function off_image(parm_name){document[parm_name].src = eval(parm_name + "_off.src");}
// end hiding script from old browsers -->