Form fields

[fert]

[code]
<p><input type="text" name="number1" size="20"> <input type="text" name="number1" size="20"> <input type="text" name="number1" size="20"></p>
<p>Numbers must be between 0 and 20</p>
<p><font size="1">Chance 1 in 8000</font></p>

<p>Options:</p>
<p><input type="radio" name="multiply">Multiply</p>
<p><input type="text" name="total" readonly value="5"></p>
<p><input type="submit" value="Submit"></p>
[/code]
I was wondering how can I add five to the value of the last textbox when the radio button is clicked on?

[hitman6003]

Have an onclick that does

[code]document.getElementById('idofthetextbox').value = document.getElementById('idofthetextbox').value * 5[/code]