function imprimir() 
{ 
var a = window.open('','','width=700,height=700'); 
a.document.open("text/html"); 
a.document.write("<link href='../../estils_imprimir.css' rel='stylesheet' type='text/css'>");
a.document.write("<table border='0' cellspacing='10' cellpadding='0'>  <tr>    <td><img src='../../logo/logo_300x75.gif' width='300' height='74'></td>  </tr></table>");
a.document.write(document.getElementById('contingut').innerHTML); 
a.document.close(); 
a.print(); 
}