var myWidth = 0;
var myHeight = 0;

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

function ReEstructurar(){
  window.moveTo(0,0);
  window.resizeTo(screen.availWidth, screen.availHeight);

  Medidas();
}