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

function resizer() {
  var w=getWidth();
  document.getElementById("resizer_container").style.left=((w-1440)/2)+"px";
  document.getElementById("resizer_container").style.width=(w-((w-1440)/2))+"px";
}