if( document.getElementsByTagName ) {
  
  var headings = document.getElementById( "region-content" ).getElementsByTagName( "h1" );
  if( headings.length ) {
    var firstheading = headings.item( 0 );
    if( firstheading.className.indexOf( "documentFirstHeading" ) < 0 )
      firstheading.className += " documentFirstHeading";
    firstheading.innerHTML = "<span>" + firstheading.innerHTML + "</span>";
  }

}