if (document.images) {
  var advisors = new Image();
  advisors.src = "images/nav/advisors.gif";
  var advisorsroll = new Image();
  advisorsroll.src = "images/nav/advisorsroll.gif";	  
	  
  var providers = new Image();
  providers.src = "images/nav/providers.gif";
  var providersroll = new Image();
  providersroll.src = "images/nav/providersroll.gif";

  var employers = new Image();
  employers.src = "images/nav/employers.gif";
  var employersroll = new Image();
  employersroll.src = "images/nav/employersroll.gif";

  var consumers = new Image();
  consumers.src = "images/nav/consumers.gif";
  var consumersroll = new Image();
  consumersroll.src = "images/nav/consumersroll.gif";
  
  var stagesheader = new Image();
  stagesheader.src = "images/nav/stagesheader.gif";
  var stagesheaderroll = new Image();
  stagesheaderroll.src = "images/nav/stagesheaderroll.gif";
  
  var shopbut = new Image();
  shopbut.src = "images/nav/shopbut.gif";
  var shopbutroll = new Image();
  shopbutroll.src = "images/nav/shopbutroll.gif";
  
}

// script source: http://www.webreference.com/js/column1/several.shtml

function act(imgName) {
  if (document.images)
    document.images[imgName].src = eval(imgName + "roll.src");
}

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