//===============================================================
  function ButtonClick(btnName)
  {
  window.document.images[BtnActive].src=BtnImgOut;          
  BtnActive = btnName;
  window.document.images[BtnActive].src=BtnImgActive;          
  }
//===============================================================
  function SwapButtonImage(btnName, OverOut)
  {
  alert("test"); 
  switch(OverOut)
    {
    case 'Over':
        window.document.images[btnName].src=BtnImgOver;
        break;
    case 'Out':
        window.document.images[btnName].src=BtnImgOut;
        window.document.images[BtnActive].src=BtnImgActive;        
        break;
    }
  }