var div1;
   var div2;
   var div3;
   var div1Height;
   var div2Height;
   var maxHeight;
   var yMax;
   
function setHeight() {
   if (window.innerHeight) {
      yMax = window.innerHeight+window.pageYOffset;
      }
   else {
      yMax = document.body.clientHeight+document.body.scrollTop;
      }

   div1=document.getElementById('menudiv'); 
   div2=document.getElementById('contentdiv'); 
   div3=document.getElementById('copyright'); 
   if(div1.offsetHeight){ 
      div1Height=div1.offsetHeight; 
      div2Height=div2.offsetHeight;
   } 
   else if(div1.style.pixelHeight){ 
      div1Height=div1.style.pixelHeight; 
      div2Height=div2.style.pixelHeight; 
   } 
   maxHeight=Math.max(div1Height,div2Height); 
   div1.style.height = maxHeight + 20;
   div2.style.height = maxHeight + 20;
   if (yMax < maxHeight + 220) {
      div3.style.top = maxHeight + 230;
	  }
   else {
      div3.style.top = yMax + 18;
	  }
}