browserName = navigator.appName;
browserVer = parseInt ( navigator.appVersion );
version = "n2";

if ( browserName == "Netscape" && browserVer >= 3 ) version = "n3";
if ( browserName == "Microsoft Internet Explorer" && browserVer >= 4 ) version = "e4";

if ( version == "n3" || version == "e4" ) {
   Arc_Left2        = new Image ( 100 , 5 );
   Arc_Left2        = new Image ( 100, 5 );
   Arc_Left2.src    = "images/ARC/Tilesets/Arc-Left2.gif";
   Arc_Left2.src    = "images/ARC/Tilesets/Arc-Left2.gif";
		
   English2_Off     = new Image ( 48 , 29 );
   English2_On      = new Image ( 48, 29 );
   English2_Off.src = "images/ARC/Buttons/Hover/English2-Off.gif";
   English2_On.src  = "images/ARC/Buttons/Hover/English2-On.gif";

   English_Off      = new Image ( 48 , 29 );
   English_On       = new Image ( 48, 29 );
   English_Off.src  = "images/ARC/Buttons/Hover/English-Off.gif";
   English_On.src   = "images/ARC/Buttons/Hover/English-On.gif";

   French_Off       = new Image ( 48 , 29 );
   French_On        = new Image ( 48, 29 );
   French_Off.src   = "images/ARC/Buttons/Hover/French-Off.gif";
   French_On.src    = "images/ARC/Buttons/Hover/French-On.gif";

   German_Off       = new Image ( 48 , 29 );
   German_On        = new Image ( 48, 29 );
   German_Off.src   = "images/ARC/Buttons/Hover/German-Off.gif";
   German_On.src    = "images/ARC/Buttons/Hover/German-On.gif";

   Italian_Off      = new Image ( 48 , 29 );
   Italian_On       = new Image ( 48, 29 );
   Italian_Off.src  = "images/ARC/Buttons/Hover/Italian-Off.gif";
   Italian_On.src   = "images/ARC/Buttons/Hover/Italian-On.gif";

   Spanish_Off      = new Image ( 48 , 29 );
   Spanish_On       = new Image ( 48, 29 );
   Spanish_Off.src  = "images/ARC/Buttons/Hover/Spanish-Off.gif";
   Spanish_On.src   = "images/ARC/Buttons/Hover/Spanish-On.gif";
	
}
function button_on ( imgName ) {
   if (version == "n3" || version == "e4") {
      butOn = eval(imgName + "_On.src");
      document [imgName].src = butOn;
   }
}
function button_off ( imgName ) {
   if (version == "n3" || version == "e4") {
      butOff = eval(imgName + "_Off.src");
      document [imgName].src = butOff;
   }
}
<!-- Fill the Search box, based on Office Selection -->
function fillSearch(selectCtrl, itemArray, goodPrompt, badPrompt, defaultItem)  {
   var i, j;
   var prompt;
   for (i = selectCtrl.options.length; i >=0; i--)  {
       selectCtrl.options[i] = null;
   }
   prompt = (itemArray != null) ? goodPrompt : badPrompt;
   if (prompt == null)  {
       j = 0;
   } else {
       selectCtrl.options[0] = new Option(prompt);
       j = 1;
   }
   if (itemArray != null) {
       for (i = 0; i < itemArray.length; i++) {
            selectCtrl.options[j] = new Option(itemArray[i][0]);
            if (itemArray[i][1] != null) {
                selectCtrl.options[j].value = itemArray[i][1];
            }
            j++;
       }
       selectCtrl.options[0].selected = true;
   }
}