bName = navigator.appName;
    bVer = parseInt(navigator.appVersion);
    ver = "other";
if ((bName == "Netscape" && !(bVer < 3)) 
 || (bName == "Microsoft Internet Explorer" && !(bVer < 4))) ver = "good"; 

if (ver == "good") {

	subaboutMISSIONon = new Image;
	subaboutMISSIONon.src ="images/sub-about-mis-over.gif";
	subaboutMISSIONoff = new Image;
	subaboutMISSIONoff.src ="images/sub-about-mis.gif";
	subaboutHISTORYon = new Image;
	subaboutHISTORYon.src ="images/sub-about-his-over.gif";
	subaboutHISTORYoff = new Image;
	subaboutHISTORYoff.src ="images/sub-about-his.gif";
	subaboutTESTIMONIALSon = new Image;
	subaboutTESTIMONIALSon.src ="images/sub-about-test-over.gif";
	subaboutTESTIMONIALSoff = new Image;
	subaboutTESTIMONIALSoff.src ="images/sub-about-test.gif";
	subaboutPRESSon = new Image;
	subaboutPRESSon.src ="images/sub-about-press-over.gif";
	subaboutPRESSoff = new Image;
	subaboutPRESSoff.src ="images/sub-about-press.gif";
	subaboutPRIVACYon = new Image;
	subaboutPRIVACYon.src ="images/sub-about-pri-over.gif";
	subaboutPRIVACYoff = new Image;
	subaboutPRIVACYoff.src ="images/sub-about-pri.gif";

}

function rollon(imgName) {
    if (ver == "good") {
        imgOn = eval(imgName + "on.src");
        document[imgName].src = imgOn;
    }
}

function rolloff(imgName) {
    if (ver == "good") {
        document[imgName].src = eval(imgName + "off.src");
    }
}
// -->