function newImage(arg)
  {
    if(document.images)
    {
      rslt = new Image();
      rslt.src = arg;
      return rslt;
    }
  }
  
  function changeImages()
  {
    if(document.images && (preloadFlag == true))
    {
      for(var i=0; i<changeImages.arguments.length; i+=2)
      {
        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
      }
    }
  }
  
  var preloadFlag = false;
  function preloadImages()
  {
    if(document.images)
    {
      NavAboutUs_over = newImage("/img/layout/NavAboutUs-over.gif");
      NavForms_over = newImage("/img/layout/NavForms-over.gif");
      NavHome_over = newImage("/img/layout/NavHome-over.gif");
      NavProperties_over = newImage("/img/layout/NavProperties-over.gif");
      NavNewsletter_over = newImage("/img/layout/NavNewsletter-over.gif");
      NavResources_over = newImage("/img/layout/NavResources-over.gif");
      NavPublicInfo_over = newImage("/img/layout/NavPublicInfo-over.gif");
      NavQuestions_over = newImage("/img/layout/NavQuestions-over.gif");
      NavDepartments_over = newImage("/img/layout/NavDepartments-over.gif");
      SectionHeader_About = newImage("/img/layout/SectionHeader-About.jpg");
      SectionHeader_Forms = newImage("/img/layout/SectionHeader-Forms.jpg");
      SectionHeader_Properties = newImage("/img/layout/SectionHeader-Properties.jpg");
      SectionHeader_News = newImage("/img/layout/SectionHeader-News.jpg");
      SectionHeader_Resources = newImage("/img/layout/SectionHeader-Resources.jpg");
      SectionHeader_PubInfo = newImage("/img/layout/SectionHeader-PubInfo.jpg");
      SectionHeader_PubInfo = newImage("/img/layout/SectionHeader-Questions.jpg");
      SectionHeader_PubInfo = newImage("/img/layout/SectionHeader-Departments.jpg");
      preloadFlag = true;
    }
  }