moonbiter - 7:00 pm on Oct 8, 2002 (gmt 0)

Your submit button:

<input type="submit" name="submitName" disabled="disabled" />

and in the javascript:

<script type="text/javascript">
function verify(val){
if (val <= 25) {
alert("Your number is less than 25, try again");
document.formname.boxname.focus();
} else {
document.formname.submitName.disabled = false;
}
}</script>