block/show form element based on previous choice

[learningcurve]

I know this can be done, but I just can't write the javascript correctly to make it work.  

I have these two form elements:

<input type="radio" name="JECT" value="no" checked <?php if(@$JECT=="no"){ echo "checked";}?>>
No thanks</br>

<input type='radio' name='JECT' value='JECTindividual_print' <?php if(@$JECT=="JECTindividual_print"){ echo "checked";}?>>
Print subscription (US and Canada only): US $<?php echo $JECTindividual_print_price['base']['United States']; ?>, Canada $<?php echo $JECTindividual_print_price['base']['Canada']; ?></br>

<input type='radio' name='JECT' value='JECTindividual_electronic' <?php if(@$JECT=="JECTindividual_electronic"){ echo "checked";}?>>
Electronic subscription (access to complete online archive): $<?php echo $JECTindividual_electronic_price['base']; ?></br>

<input type='radio' name='JECT' value='JECTindividual_combo' <?php if(@$JECT=="JECTindividual_combo"){ echo "checked";}?>>
Combination print and electronic subscription (US and Canada only): $<?php echo $JECTindividual_combo_price['base']; ?></br>

        <p style="text-indent:30px;">Length of subscription:</br></p>
            <label><input type="radio" name="JECTsub" value="1" checked <?php if(@$JECTsub=="1"){ echo "checked";}?>> 1 year</label></br>
            <label><input type="radio" name="JECTsub" value="2" <?php if(@$JECTsub=="2"){ echo "checked";}?>> 2 years</label></br>
            <label><input type="radio" name="JECTsub" value="3" <?php if(@$JECTsub=="3"){ echo "checked";}?>> 3 years</label></br>
            <label><input type='checkbox' name='JECTrenewal' value='yes' <?php if(@$JECTrenewal=="yes"){ echo "checked";}?>> Check box if this is a renewal</label></br>
    

If the "no" radio button is checked (in other words, if $JECT="no", I want the JECTsub radio buttons to not show.  if any other value is chosen for JECT, I want the JECTsub buttons to show.  Thanks ahead for the help. 

 

[Muddy_Funster]

why would you give all the radio buttons the same name? especialy if they don't have an id to make them uniquely identifiable.  I suggest fixing that first, and then apply a class to the radio buttons that you want to selectivly show then just change the display of this class using javascript to suit.