function preloadimages()
{
  image1 = new Image();
  image1.src='images/menu3.gif';
}

function openWindow(url,width,height)
{
  var params="menubar=no,toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=no,dependent,top=0,left=0,width="+width+",height="+height;
  var random = Math.floor(Math.random()*9999999);
  popupWin = window.open(url, random,params);
  popupWin.focus();
}

function checkEnter(e)
{
  var characterCode;
  if(e && e.which){ //if which property of event object is supported (NN4)
   e = e
   characterCode = e.which //character code is contained in NN4's which property
  }
  else{
   e = event
   characterCode = e.keyCode //character code is contained in IE's keyCode property
  }
  if(characterCode == 13){ 
   document.searchform.submit(); 
   return true;
  }
}