help with passing a php variable to an onclick function

[eluser]seanbbb[/eluser]
hi, I am trying to pass a php variable to <a >VenueID;
$output .= '<tr><td ><a href="#self" class="menulink"
>
<strong>' . $venue_details->Name . '</strong><br/>';
$output .= ' '.$venue_details->Address1 .', ';
$output .= $venue_details->Address2 .', ';
$output .= $venue_details->City .', ';
$output .=$venue_details->Postcode .', ';
$output .=$venue_details->PhoneNumber .', ';
$output .=$venue_details->URL .'</a></td></tr><hr/>';