function resizeDiv()
{

  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }

   var newHeight=myHeight * 0.8;
   ct = document.getElementById("region-content");
   if(ct != null) {
     ct.style.height='100%';
   }
   ct = document.getElementById("content");
   if(ct != null) {
      ct.style.height='100%';
   }

   return newHeight;
}


window.onresize=resizeDiv

AttachEvent(window,'load', resizeDiv, false);