// Highlight External Links by Amit Agarwal

// Find the domain name of the current page
var host = window.location.host;

// Use Google's Favicon Generator
var goog = 'https://www.google.com/s2/favicons?domain=';

// Find all hyperlinks on a web page
var links = document.getElementsByTagName('a');

for (i = 0; i < links.length; i++) {
  var link = links[i];

  // Skip all internal links where the href is the same as the domain host
  // Also skip non HTTP links like FTP, MAILTO, etc.

  if (link.href.match('^https?://') && !link.href.match(host)) {
    var domain = link.href.split('/');

    // Apply some CSS styles to the external hyperlinks
    link.style.background = 'url(' + goog + domain[2] + ') center left no-repeat';

    link.style.fontWeight = 'bold';

    link.style.fontSize = '105%';

    link.style.padding = '5px 5px 5px 20px';

    link.style.textDecoration = 'underline';
  }
}