//this code can be modified to display a special message to visitors from a specific domain
//the code in the body looks like <script>document.write('' + $var);</script>
if (document.referrer.indexOf('google.com') > -1)
    $var = 'g';
else if (document.referrer.indexOf('yahoo.com') > -1)
    $var = 'y';
else if (document.referrer.indexOf('bing.com') > -1)
    $var = 'b';
else if (document.referrer.indexOf('daveramsey.com') > -1)
    $var = 'dr';
else 
    $var = 'n';