if ((navigator.appName == "Netscape" && parseInt(navigator.appVersion) >= 3) || (navigator.appName == "Microsoft Internet Explorer" && parseInt(navigator.appVersion) >= 4)) Browser = 1; else Browser = 0;

if (Browser) {

arImageSrc = new Array 
("/images/buttons/imButton11.gif","/images/buttons/imButton12.gif","/images/buttons/imButton13.gif","/images/buttons/imButton21.gif","/images/buttons/imButton22.gif","/images/buttons/imButton23.gif","/images/buttons/imButton31.gif","/images/buttons/imButton32.gif","/images/buttons/imButton33.gif","/images/buttons/imButton41.gif","/images/buttons/imButton42.gif","/images/buttons/imButton43.gif");

arImageList = new Array ();
for (counter in arImageSrc) {
arImageList[counter] = new Image();
arImageList[counter].src = arImageSrc[counter];
}

navigArray = new Array()
for (i=1; i < 5; i++) {
   navigArray[i] = new Array()
   for (j=1; j < 4; j++) {
      navigArray[i] [j] =  "/images/buttons/imButton"+i+j+".gif";
   }
}
}

function changeButton(index,location) {
	if (Browser)
		document ["button" + index].src = navigArray[index] [location];
  return true;
}