function changePos() {
  var myWidth = 0, myHeight = 0, pictWidth = 568, pictHeight = 318, menuWidth = ( pictWidth / 2 ), menuHeight = 200;
  if( typeof( window.innerWidth ) == 'number' ) {
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth ||document.documentElement.clientHeight ) ) {
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  document.getElementById('menu').style.left=Math.max((myWidth-(menuWidth+20)),200)+'px';
  document.getElementById('menu').style.top=Math.max((myHeight-(menuHeight+335)),200)+'px';
  document.getElementById('main').style.width=Math.max((myWidth-(menuWidth+50)),170)+'px';
  document.getElementById('logo').style.left=Math.max((myWidth-(pictWidth+20)),200)+'px';
  document.getElementById('logo').style.top=Math.max((myHeight-(pictHeight+15)),600)+'px';
}  // end of function changePos