/*
© 2000 Sergey Sirotkin
Special thanks to Dan Steinman
*/


if (document.images)
 {
  buttonoff=new Image();
  buttonoff.src="aus.jpg"
  buttonon=new Image();
  buttonon.src="ein.jpg"
 }

function RollOn(bt)
 {
  if (document.images)
   {
    document[bt].src=eval(bt+"on.src")
   }
 }

function RollOff(bt)
 {
  if (document.images)
   {
    document[bt].src=eval(bt+"off.src")
   }
 }