function newImage(arg) {

     if (document.images) {

          rslt = new Image();

          rslt.src = arg;

          return rslt;

     }

}



function changeImages() {

     if (document.images && (preloadFlag == true)) {

          for (var i=0; i<changeImages.arguments.length; i+=2) {

               document[changeImages.arguments[i]].src = changeImages.arguments[i+1];

          }

     }

}



var preloadFlag = false;

function preloadImages() {

     if (document.images) { 
     
          bannerb = newImage("images/bannerb.gif");

          logob = newImage("images/logob.gif");

          prob = newImage("images/prob.gif");

          shab = newImage("images/shab.gif");

          warb = newImage("images/warb.gif");

          tesb = newImage("images/tesb.gif");

          conb = newImage("images/conb.gif");

          protext = newImage("images/protext.gif");

          hometext = newImage("images/hometext.gif");

          shatext = newImage("images/shatext.gif");

          wartext = newImage("images/wartext.gif");

          testext = newImage("images/testext.gif");

          context = newImage("images/context.gif");

          preloadFlag = true;

     }

}