if (document.images) {
 var ImgOver = new Array();
 ImgOver[0] = new Image();
 ImgOver[0].src = "Buttons/CloseOverBut.gif";
 var ImgOut = new Array();
 ImgOut [0] = new Image();
 ImgOut [0].src = "Buttons/CloseBut.gif";
}
function Rollover() {
  if (document.images) document.images [3].src = ImgOver [0].src;
}
function RollOut() {
  if (document.images) document.images [3].src = ImgOut [0].src;
}