Receipt Date hide not working when Send Receipt checkbox is clicked

Go to New Contribution for contact who has an email. Click [ ] Send Receipt. Receipt Date should get hidden. However ...this jscript isn't firing (lines 432-434) in Contribution form:

cj('#is_email_receipt').click( function( )

{ checkEmailDependancies( ); }

);

And the reason is because there are two copies of is_email_receipt checkbox in the form (first one is hidden). These lines seem to be the culprit - 156-162. Seems to be duplicate of code later in the form (lines 265-271). Not sure why the first instance was added ???

SVN blame is here:

44130 kurund

{if !$contributionMode}

44130 kurund

{if $email and $outBound_option != 2}

44130 kurund <tr id="email-receipt" style="display:none;" class="crm-contribution-form-block-is_email_receipt">
44130 kurund <td class="label">{$form.is_email_receipt.label}</td>
44130 kurund <td>{$form.is_email_receipt.html} <span class="description">

{ts}

Automatically email a receipt for this payment to

{/ts}

<span id="email-address"></span>?</span>
44130 kurund </td>
44130 kurund </tr>
44130 kurund

{/if}