if (document.images){
//window.location.replace("http://www.qubit.org");
  var srcArray = ['about','whats','toc','don','vol']
  var imgs = new Object;
  var str
  for (var sa = 0; sa < srcArray.length; sa++)
    {
      str =srcArray[sa] + 'on'
      imgs[str] = new Image()
      imgs[str].src = '/images/hp/' + str + '.gif'
      
      str =srcArray[sa] + 'off'
      imgs[str] = new Image()
      imgs[str].src = '/images/hp/' + str + '.gif'
      
    }	
}

function toggleImg(onOff)
  {
    var myImg = this.firstChild
    var currSrc = myImg.src
    if (onOff) 
      {
        myImg.src = currSrc.replace(/off.gif/,'on.gif')
       }
    else 
      {
        myImg.src = currSrc.replace(/on.gif/,'off.gif')
      }    
  }
  
if (document.getElementById)
  {
    var nav = document.getElementById('nav')
    var navLx = nav.getElementsByTagName('A')
    var currLk
    
    for (n = 0; n < navLx.length; n++)
      {
        currLk = navLx[n];
        currLk.onmouseover = function(){toggleImg.apply(this,[true])}
        currLk.onmouseout = function(){toggleImg.apply(this,[false])}
      }   
  }