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

function setFooter() {
   if (document.getElementById) {
      var windowHeight = getWindowHeight();
      if (windowHeight > 0) {
         var contentHeight = document.getElementById('content').offsetHeight;
         var footerElement = document.getElementById('footer');
         var footerHeight  = footerElement.offsetHeight;
         if (windowHeight - (contentHeight + footerHeight) >= 0) {
            footerElement.style.position = 'relative';
            footerElement.style.top = (windowHeight - (contentHeight + footerHeight)) + 'px';
         }
         else {
            footerElement.style.position = 'static';
         }
      }
   }
}
window.onload = function() {
   setFooter();
}
window.onresize = function() {
   setFooter();
}