var minwidth = 940;
var minheight = 655;

function getWindowWidth() {
 var viewportwidth;
 var viewportheight; 
 if (typeof window.innerWidth != 'undefined') {
      viewportwidth = window.innerWidth,
    viewportheight = window.innerHeight
 } else if (typeof document.documentElement != 'undefined'
 && typeof document.documentElement.clientWidth !=
   'undefined' && document.documentElement.clientWidth != 0)
 {
     viewportwidth = document.documentElement.clientWidth,
     viewportheight = document.documentElement.clientHeight
 }else {
       viewportwidth = document.getElementsByTagName('body')[0].clientWidth,
      viewportheight = document.getElementsByTagName('body')[0].clientHeight
}
 return viewportwidth;
}
function getWindowHeight() {
 var viewportwidth;
 var viewportheight; 
 if (typeof window.innerWidth != 'undefined') {
      viewportwidth = window.innerWidth,
    viewportheight = window.innerHeight
 } else if (typeof document.documentElement != 'undefined'
 && typeof document.documentElement.clientWidth !=
   'undefined' && document.documentElement.clientWidth != 0)
 {
     viewportwidth = document.documentElement.clientWidth,
     viewportheight = document.documentElement.clientHeight
 }else {
       viewportwidth = document.getElementsByTagName('body')[0].clientWidth,
      viewportheight = document.getElementsByTagName('body')[0].clientHeight
}
  return viewportheight;
}
function getElement(id) {
  var r; 
  if(document.getElementById)
    r = document.getElementById(id);
  else if(document.all)
    r = document.all[id]; 
  return r;
}
function checkForSize() {
  var w = getWindowWidth();
  var h = getWindowHeight(); 
  var e = getElement("ovre"); 
  if(w == null || h == null || e == null)
      return; 
  if(w < minwidth)
    e.style.width = minwidth;
  else
    e.style.width = "100%";
 
  if(h < minheight)
    e.style.height = minheight;
  else
    e.style.height = "100%";
}