desImg = new Image();
desImg.src = "/Images/FrontPage/SignUpFlat.gif";
desImgL = new Image();
desImgL.src = "/Images/FrontPage/SignUpLite.gif";

serImg = new Image();
serImg.src = "/Images/FrontPage/ServicesFlat.gif";
serImgL = new Image();
serImgL.src = "/Images/FrontPage/ServicesLite.gif";

samImg = new Image();
samImg.src = "/Images/FrontPage/SampleFlat.gif";
samImgL = new Image();
samImgL.src = "/Images/FrontPage/SampleLite.gif";

sitImg = new Image();
sitImg.src = "/Images/FrontPage/SiteMapFlat.gif";
sitImgL = new Image();
sitImgL.src = "/Images/FrontPage/SiteMapLite.gif";

hlpImg = new Image();
hlpImg.src = "/Images/FrontPage/HelpFlat.gif";
hlpImgL = new Image();
hlpImgL.src = "/Images/FrontPage/HelpLite.gif";

logImg = new Image();
logImg.src = "/Images/FrontPage/LoginFlat.gif";
logImgL = new Image();
logImgL.src = "/Images/FrontPage/LoginLite.gif";

function getWindowHeight() {
  var windowHeight = 0;
  if (typeof(window.innerHeight) == 'number') {
      windowHeight = window.innerHeight;
  } else {
      if (document.documentElement && document.documentElement.clientHeight) {
        windowHeight = document.documentElement.clientHeight;
      } else {
          if (document.body && document.body.clientHeight) {
              windowHeight = document.body.clientHeight;
          }
      }
  }
  return windowHeight;
}