function newfoot() {
var myHeight=getHeight();

document.getElementById('Menu').style.height=myHeight + 'px';
document.getElementById('Right1').style.height=myHeight + 'px';
} 

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

newfoot();