Adding items to forum jump

[MrEyes]

I am currently working on a modification that requires me to add an additional item to the forum jump menu. After some hunting around on here I have done this, however this required a change to the forumdisplay.php. Does anybody know of a way to do this without "hacking" any of the default pages?

This is how I have done this:

In forumdisplay.php, within the "exec_postvar_call_back()" function, I have added an additional switch case item:

case 'mymodification':	$goto = 'mymodification'; break;

// jump from forumjump
	switch ($vbulletin->GPC['forumid'])
	{
	case 'search':	$goto = 'search'; break;
	case 'pm':		$goto = 'private'; break;
	case 'wol':	$goto = 'online'; break;
	case 'cp':		$goto = 'usercp'; break;
	case 'subs':	$goto = 'subscription'; break;
	case 'mymodification':	$goto = 'mymodification'; break;
	case 'home':
	case '-1':		$goto = $vbulletin->options['forumhome']; break;
}

I have also changed the "forumjump" template to include an additional option (after Forum Home)

<option value="mymodification" $frmjmpsel[mymodification]>My Modification</option

And finally in my page I am calling the "construct_forum_jump();" method, which creates a "$forumjump" variable that is used within my templates to show the forum jump.

The template change is fair enough, but as mentioned above I would like to avoid changing the forumdisplay.php file.

Actually while on the subject of the template, in order to get my modification page to be selected I had to set the following variable in my script:

$frmjmpsel["mymodification"] = 'class="fjsel" selected="selected"';

Is this the right way of doing this?

EDIT: I did notice that there is a "forumjump" hook which is called just before the "construct_forum_jump" function returns, but to be honest I can't see how I could use this to remove the requirement to edit the forumdisplay.php file. Although with some fancy jiggery pockery this could be used to remove the template edit.