function imprimir() 
{ 
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a.document.open("text/html"); 
a.document.write("<link href='../includes/estils_imprimir.css' rel='stylesheet' type='text/css'>");
a.document.write("<table border='0' cellspacing='10' cellpadding='0'>  <tr>    <td><img src='../includes/logo_cosjove.jpg'></td>  </tr><tr><td>");
a.document.write(document.getElementById('contingut').innerHTML); 
a.document.write("</td>  </tr><tr><td><br><br><span class='credits'>Cos Jove - Arquimedes 183 C, Terrassa 08224 - tel 93 733 62 90 - cosjove@cosjove.cat </span></td></tr></table>");
a.document.close(); 
a.print(); 
}