function changeText ( whichButton ) {

   var usingInternetExplorer= document.all;        // Sets identifiier for Internet Explorer
   var usingNetscape4x = document.layers;        // Sets identifier for Netscape 4.x
                                        // All others will be handled by the else command
   var picDisplay, textDisplay;

   if ( usingInternetExplorer ){
      picDisplay  = document.all.displayPic;
      textDisplay  = document.all.displayText;
      } else {
   if ( usingNetscape4x ) {
      picDisplay  = document.displayPic;
      textDisplay = document.displayText;
      xxx = "Netscape";
   } else {
      picDisplay  = document.getElementById  ("displayPic");
      textDisplay = document.getElementById  ("displayText");
   };
   };
      switch ( whichButton ) {
         case "docks":
          picDisplay.src          ="pics/displayDocks.GIF";
          textDisplay.innerHTML   ="See pictures and technical information of our Docks";                        break;
         case "lifts":
          picDisplay.src          ="pics/displayLifts.GIF";
          textDisplay.innerHTML   ="Not sure what size boat lift to purchase? Let us help you!";                break;
         case "railways":
          picDisplay.src          ="pics/displayRailways.GIF";
          textDisplay.innerHTML   ="Rest easier at night knowing your boat is right out of the water";         break;
         case "contact":
          picDisplay.src          ="pics/displayContact.GIF";
          textDisplay.innerHTML   ="Questions? Comments? We'd love to hear from you!";                 break;
         case "dealers":
          picDisplay.src          ="pics/displayDealers.GIF";
          textDisplay.innerHTML   ="Dealership opportunities exist in your area! Check inside for more details"; break;
         case "testimonials":
          picDisplay.src          ="pics/displayTestimonials.GIF";
          textDisplay.innerHTML   ="See what some of our previous clients have to say about us";         break;
         case "original":
          picDisplay.src          ="pics/displayOriginal.GIF";
          textDisplay.innerHTML   ="We Have Moved!!";                                 break;
   };
};