A bookmarklet to determine whether a website is running Drupal, Pressflow, or something else.

Drupal, Pressflow, Other?

javascript:
(function(){
  /*@author Matt Vance (borrowing heavily from Pablo Cantero's pageChangesNotifier.js - https://gist.github.com/751586) */
var xmlHttp=getXMLHttpObj();
  if(xmlHttp==null){
    alert('Failed to load XMLHTTP');
    return;
  }
  var actual=getPageContent(xmlHttp,window.location.href);
  switch(actual){
    case'Sun, 19 Nov 1978 05:00:00 GMT':alert('Drupal');
    break;
    case'Sun, 11 Mar 1984 12:00:00 GMT':alert('Pressflow');
    break;
    default:alert('Other (Datestamp = "'+actual+'")');
  }
  function getPageContent(xmlHttp,url){
    xmlHttp.open('GET',window.location.href,false);
    xmlHttp.send('');
    return xmlHttp.getResponseHeader("Expires");
  }
  function getXMLHttpObj(){
    if(typeof(XMLHttpRequest)!='undefined')
      return new XMLHttpRequest();
    var axO=['Msxml2.XMLHTTP.6.0','Msxml2.XMLHTTP.4.0','Msxml2.XMLHTTP.3.0','Msxml2.XMLHTTP','Microsoft.XMLHTTP'];
    for(var i=0;i<axO.length;i++){
      try{
        return new ActiveXObject(axO[i]);
      }
      catch(e){
      }
    }
    return null;
  }
}
)()