function WindowHeight() {
      if (window.innerHeight != window.undefined){
            return window.innerHeight;
      }
      if (document.compatMode == 'CSS1Compat'){
            return document.documentElement.clientHeight;
      }
      if (document.body){
            return document.body.clientHeight;
      }
      return 0;
}

function WindowWidth() {
      if (window.innerWidth != window.undefined){ //Firefox
            return window.innerWidth -17;
      }
      if (document.compatMode == 'CSS1Compat'){
            return document.documentElement.clientWidth;
      }
      if (document.body){ //IE
            return document.body.clientWidth;
      }
      return 0;
}