HTML Form disables next button

Hi we need a form solution for coursepress. I wrote a simple HTML form as follows:

<form method="post" action="simpleform.asp">
First Name: <input type="text" name="fname">
Last Name: <input type="text" name="lname">
e-mail:<input type="text" name="email">
Favorite Color?:<input type="text" name="color">

<input type="submit" value="add me">
</form>

looks great on the CP page but the next button is disabled and the buttons are rearranged.