<SCRIPT>
function yes() {
TWDiv.style.color ='black';
mainform.MakeModel.disabled=false;
mainform.MakeModel.focus();
}
function no() {
TWDiv.style.color ='gray';
mainform.MakeModel.disabled=true;
mainform.MakeModel.value='';
}
</SCRIPT>
<FORM NAME="mainform">
Do you own a car?
<INPUT TYPE="RADIO" NAME="CAR" onclick="yes();">Yes
<INPUT TYPE="RADIO" NAME="CAR" onclick="no();"
CHECKED>No
<BR>
<DIV ID="TWDiv" style="color:gray">
<LABEL FOR="MakeModel">
<INPUT TYPE="TEXT" ID="MakeModel" DISABLED>
Make and Model</LABEL>
</DIV>
<BR>
<INPUT TYPE="SUBMIT">
<INPUT TYPE="RESET">
</FORM>