Micro Question. XPATH

Micro Question. XPATH

Hello everyone I'm new to JQuery but I have a question my script does not work I think the error is in line 13 that no class Pour the link that will be? 
  1. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml"><head>
    <style>
    a.samsung{
        color:#CCC;
        background-color:#666;
        }
    </style>
    <script src="../jquery.js">
    </script>
    <script language='javascript'>
    $(document).click(function(){
             $("a[@href*='mailto:']").addClass('samsung');
     });
    </script>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Documento sin título</title>
    </head>
    <body>
    <a href="mailto:henryiv@king.co.uk" >alberto</a>
    </body>
    </html>