naming convention w3c id attribute

I tested a website with the W3C validator and got the following result:

 Line 262, Column 40: value of attribute "id" invalid: "1" cannot start a name 
<form action="/" method="post" id="1" accept-charset="UTF-8"><div><div id="…
It is possible that you violated the naming convention for this attribute. For example, id and name attributes must begin with a letter, not a digit.

like it says: the id attribute should start with a letter

hope anyone can fix that.

thanks for your work!