[ddr]

I've solved problem discussed above.
please see thank.txt, rename it into thank.js and put into clientscript directory.

modifications of my templates are:
template post_thanks_box:

<span id="post_thanks_box_$post[postid]">$post_thanks_box</span>

post_thanks_button

<a href="#" id="post_thanks_button_$post[postid]"<if condition="$vboptions[disable_ajax] != 2"> onclick="post_thanks_give_('$post[postid]'); return false;"</if> style="display:$display_image" rel="nofollow"><img src="$stylevar[imgdir_button]/post_thanks.gif" alt="$vbphrase[post_thanks_thanks]" border="0" /></a>

post_thanks_postbit_legacy

<hr>
<div style="padding:$stylevar[cellpadding]px 0px 0px 0px" align="left">
<strong><phrase 1="$post[username]">$vbphrase[post_thanks_user_says]</phrase></strong>
$liste_user
<if condition="$bbuserinfo[usergroupid] == 6"><br />
<a href="showthread.php?do=post_thanks_remove_all&amp;p=$post[postid]"<if condition="$vboptions[disable_ajax] != 2"> onclick="post_thanks_remove_all_('$post[postid]'); return false;"</if> rel="nofollow">$vbphrase[post_thanks_remove]</a>
</if>
<if condition="$post_thanks_user > 0 && $vboptions[post_thanks_delete_own] == 1"><br />
<a href="showthread.php?do=post_thanks_remove_user&amp;p=$post[postid]"<if condition="$vboptions[disable_ajax] != 2"> onclick="post_thanks_remove_user_('$post[postid]'); return false;"</if> rel="nofollow">$vbphrase[post_thanks_remove_user]</a>
</if>
</div>

in SHOWTHREAD template i've included thank.js
other templates not modified =)