Javascript Page Jump Error

[Dj-Dark-1]

Hey everyone, I am posting this topic as I have this recurring error with javascript and I cannot for the life of me figure out what is wrong with it. I am creating my own forums and this error happens when you are viewing a topic.

I have an option box at the bottom of each post for options e.g. post creator to edit their post and for users to report posts. I am not using a button to jump from the option box to a link but instead I am using javascript. The first post always works fine then the second one works but after there is more than 1 reply only the first post works. I use two different javascript parts as shown.

Here is two sections of the view topic code, one for the first post and one for all other posts.

<form name="firstpost">
    <select name="fp_mod" size="1" onchange="fp_mod_gone()">
           <option value="">Post Options :</option>
           <option value="">--------------------</option>
          <? if($session->username == $fp_poster || $session->isNewMod()){ ?>
 <option value="editpost.php?post=<? echo "$fp_postid"; ?>">Edit Post</option>
 <option value="">--------------------</option>
          <? } ?>

Here is the section for all other posts, this part uses mysql_fetch_array to display the same for each different post.

<form name="otherposts">
  <select name="op_mod" size="1" onchange="op_mod_gone()">
    <option value="">Post Options :</option>
    <option value="">--------------------</option>
    <? if($session->username == $op_poster || $session->isNewMod()){ ?>
<option value="editpost.php?post=<? echo "$op_postid"; ?>">Edit Post</option>
<option value="">--------------------</option>
    <? } ?>

Here are the javascript functions,

	function op_mod_gone()
	{
	location=document.otherposts.op_mod.options[document.otherposts.op_mod.selectedIndex].value
	}

function fp_mod_gone()
{
location=document.firstpost.fp_mod.options[document.firstpost.fp_mod.selectedIndex].value
}

The first post always works then with one reply the second post and the first post work. But with more than one reply I get this error:

document.otherposts.op_mod is undefined
location=document.otherposts.op_mod.opt...t.otherposts.op_mod.selectedIndex].value

Anyone got any ideas, Thanks in advanced.

Dj.

[Weedpacket]

Do you mean you might have several "other posts" and therefore several forms named "otherposts"? That's not going to work, because how is JavaScript supposed to know what "document.otherposts" refers to?

Shortest-route solution might be

<select name="op_mod" size="1" onchange="op_mod_gone(this)"> 

...

function op_mod_gone(selected_post)
{
    location=selected_post.options[selected_post.selectedIndex].value;
}