// Convert all links to visible URLs (good for printing
  // Find all <a> links in the document
  var a = document.getElementsByTagName(“a”);
  while ( a.length ) {
  
      // Create a <strong> element
      var s = document.createElement(“strong”);
  
      // Make the contents equal to the <a> link URL
      s.appendChild( document.createTextNode( a[i].href ) );
  
      // Replace the original <a> with the new <strong> element
      a[i].replaceChild( s, a[i] );
  
  }