if (document.images) {
  //menu
  var webOFF = new Image(); webOFF.src="/images/btns/web.gif";
  var webON = new Image(); webON.src="/images/btns/web_roll.gif";
  var printOFF = new Image(); printOFF.src="/images/btns/print.gif";
  var printON = new Image(); printON.src="/images/btns/print_roll.gif";

  var photoOFF = new Image(); photoOFF.src="/images/btns/photo.gif";
  var photoON = new Image(); photoON.src="/images/btns/photo_roll.gif";
  var miscOFF = new Image(); miscOFF.src="/images/btns/misc.gif";
  var miscON = new Image(); miscON.src="/images/btns/misc_roll.gif";

  var contactOFF = new Image(); contactOFF.src="/images/btns/contact.gif";
  var contactON = new Image(); contactON.src="/images/btns/contact_roll.gif"; 

}


function act(imgName) {
 if (document.images) 
  document[imgName].src = eval(imgName + 'ON.src')
}

function inact(imgName) {
 if (document.images)
  document[imgName].src = eval(imgName + 'OFF.src')
}