function roll_on ( imgId,pid )
{
  if ( document.images )
  {
    butOn = "/cf/shopmast/imgs/style2c/"+imgId+ "2.gif";
    document.getElementById(imgId+pid).src = butOn;
  }
}
function roll_off ( imgId,pid )
{
  if ( document.images )
  {
    butOff ="/cf/shopmast/imgs/style2c/"+imgId+".gif";
    document.getElementById(imgId+pid).src = butOff;
  }
}