why radiobutton onclick function is not working?

[masnobi]

Hi all,
I am trying to make sure that a user cannot move on unless they select a radiobutton, but unfortunately it's not working. I used same function with checkbox in my other page and it works perfect but i don't know why it is not working here
Btw, this is not inside a form (as in other page I have used inside the form)
PLEASE HELP

echo "<td class='kooltd'><input type = 'radio' name = 'rFlight' value = '".$row['flight_id']."'></td>";

echo "<input type='submit' id='button1' name='booking' value='Make Booking for the Selected Flight' onclick='if(!this.form.rFlight.checked){alert('You must select a flight.');return false}'/></br>";

[Weedpacket]

masnobi wrote:

Btw, this is not inside a form (as in other page I have used inside the form)

That's probably your problem. If you don't have a form, what is "this.form" supposed to refer to?

[bradgrafelman]

Thread moved to ClientSide Technologies forum (since PHP knows neither what a "radiobutton[sic]" is nor when the user clicks one... or anything, for that matter).