I Want help with Search Function

[Cobra-J82]

I have this Search Box on my Forumhome
Its a customised one

So basically it only searches for User names


How can I change it to search for all forum like a normal quick search

thanks

This is the code:

<!-- ##### MEMBER SEARCH & RIGHT MENU ##### -->
<div align="left" style="padding-top:0px;padding-bottom:0px;padding-right:300px;">

<if condition="$show['popups'] AND !$show['usergroup']">
<form class="tmenu" action="memberlist.php?do=getall" method="post">
<input type="hidden" name="s" value="$session[sessionhash]" />
<input type="hidden" name="securitytoken" value="$bbuserinfo[securitytoken]" />
<input type="hidden" name="do" value="getall" />
<input type="text" class="bginput inlineimg" name="ausername" size="50" value="$ltr" title="$vbphrase[username]" /><input type="image" class="inlineimg" src="http://www.wassoufbook.com/fanclub/images/styles/new_facebook/images/buttons/search_button.gif" value="Submit" alt="Submit"/>
</form>
</if>
<!-- ##### /MEMBER SEARCH & RIGHT MENU ##### -->