var msgs = [
//null url : to show a message for direct traffic (no referer, some one who remember your site url!)
{'url':null,                           'msg':'Hello, we&#8217;re glad you remembered our site. Have you seen our <a href="/demo/">new demo video</a>?'}
//My url! : show message for referrals from your own site or null so you do not annoy them
,{'url':/^http:\/\/(\w+\.)?microsite\.com/,    'msg':null}
//Other urls
,{'url':/^http:\/\/(\w+\.)?google\.com/,      'msg':'Hello, it looks like you found us on Google. Most people from Google find the <a href="/why-microsite/why-a-microsite/">Why a Microsite page</a> most helpful.'}

//generic pattern: to show generic message for referrers that you did not specify one for
//You must keep it at the end of the list as it will match any non empty referrer
,{'url':/^http:\/\//,               'msg':'Welcome, you might find our [<a href="/the-secrets-to-selling-online-newsletter/">Secrets to Selling Online</a>] helpful  '}
];
function DetectReferrer(){
   var div = $('#WelcomePlaceHolder');
   //if Div was not placed means , not to show message
   if (!div.length) return;
   var ref = document.referrer.toLowerCase();
   var msg = findMatch(ref);
   // if not null msg found
   if(msg) {
      //Add Close Button and Show up message
      div.html( '<a href="javascript:void(0)" class="CloseButton">X</a>' + msg).show('slow',function(){
         //Hide On click close Button
         $('.CloseButton',div).click(function(){ div.hide() })
      });
   } 
}
function findMatch(ref) {
   for(var i=0; i<msgs.length; i++)
      if( ( ref=='' && msgs[i].url==null) || (ref>'' && ref.match(msgs[i].url) ) )
         return msgs[i].msg;
   return null;
}

// Call the Referrer Detector function on document ready
$(DetectReferrer);