help on this anyone?

[eluser]mistress_shiira[/eluser]

<div style="font: 12px normal Verdana;color:red;">
&lt;?php
if($this->validation->error_string){
echo $this->validation->error_string;
echo "enable_button();";
}
?&gt;
</div>

hey guys can you help me with this?
i have a simple sign up form..when the user submits the form and there is still a validation error, i want the submit button to be enabled.the submit button was disabled on load fyi.

the code above doesnt seem to work...