function changeIt(name){
  if(preloadFlag==true){
    var source=document.images[name].src.split("/");

    if(source[(source.length-1)]=="subhead.1.gif"){
      source[(source.length-1)]="subhead.1.h.gif";
    }else{
      source[(source.length-1)]="subhead.1.gif";
    }

    document.images[name].src=source.join("/");
  }
}