var MarginLeft = 5;   
  var MarginTop = 140;  
  var Width = 160;            
  var Heigth= 391;          
  
  function Set(){
      document.getElementById("FloatDIV").style.width = Width + 'px';
      document.getElementById("FloatDIV").style.height = Heigth + 'px';
  }
  
  function Move(){
        var b_top = window.pageYOffset  
                || document.documentElement.scrollTop  
                || document.body.scrollTop  
                || 0;
        var b_width= document.body.clientWidth;
      document.getElementById("FloatDIV").style.top = b_top + MarginTop + 'px';
      document.getElementById("FloatDIV").style.left = b_width - Width - MarginLeft + 'px';
      setTimeout("Move();",100);
  }
  
  Set();
  Move();