TYPO3 Core

I'm not sure how widely reproducable it is but every time I edit the setup or config field of a template through tstemplate a javascript error causes 100% cpu usage and makes the browser unusable. When debugging the problem seemed to be caused by prototype.js pointer code but that could be completely unrelated. When editing the whole record through alt_doc.php the problem does not occur.

by out commenting the following code in tstemplateinfo.php the problem disappeared which is rather strange.

if (t3lib_extMgm::isLoaded('tsconfig_help')) {
$url = $BACK_PATH.'wizard_tsconfig.php?mode=tsref';
$params = array(
'formName' => 'editForm',
'itemName' => 'data[config]',
);
// $outCode.= '<a href="#" onClick="vHWin=window.open(\''.$url.t3lib_div::implodeArrayForUrl('', array('P' => $params)).'\',\'popUp'.$md5ID.'\',\'height=500,width=780,status=0,menubar=0,scrollbars=1\');vHWin.focus();return false;"><img '.t3lib_iconWorks::skinImg($BACK_PATH, 'gfx/wizard_tsconfig.gif').' width="22" height="27" border="0" title="TSref reference"></a>';
}

I'm interested in knowing how reproducable the problem is outside my Vista IE7 protected mode setting. I couldn't reproduce the problem inside virtual pc and XP SP2 and IE6 so the problem is definitelly fairly limited
(issue imported from #M8107)