var actPos = 100;

function moveMenu() {
	
  var winHeight = window.innerHeight;
  var winWidth  = window.innerWidth;
  var areaWidth  = 550;
  var areaHeight = 470;

  var leftPos = (winWidth - areaWidth) / 2 - 25 ;
  var topPos  = (winHeight - areaHeight) / 2 ;
  
  if (leftPos < 180) leftPos = 180;
  if (topPos < 40) topPos = 40 ;
  
  document.getElementById('content').style.top = topPos;
  document.getElementById('content').style.left = leftPos;
  
  var picWidth  = 1024;
  var picHeight = 645;
  
  leftPos = (winWidth - picWidth) / 2 + 50;
  topPos =  (winHeight - picHeight) / 2 + 120;
  
  if (leftPos < 50) leftPos = 50;
  if (topPos < 40) topPos = 40;  

  document.getElementById("menu").style.top = topPos;
  document.getElementById("menu").style.left = leftPos;

  window.setTimeout("moveMenu()", 200);
}