function openPopup(url, width, height, opts) {
  if (typeof(width) == 'undefined') width = 470;
  if (typeof(height) == 'undefined') height = 100;
  if (typeof(opts) == 'undefined') opts = 'location=no,toolbar=no,status=no,scrollbars=yes';
  opts += ',width=' + width + ',height=' + height;
  window.open(url, '', opts);
}

// resize the window to fit the content
function autoResize() {
  var masterDiv = document.getElementById('masterDiv');
  var max = Math.min(screen.height - 100, 800);
  var ht = Math.min(masterDiv.scrollHeight, max);
  
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement &&
      ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  
  resizeBy(0, ht - myHeight);
}