In PHPR5.2 4905, the showhide option is not show in local language event if there is a localization in the language file. In fact the problem should be in searchpanelsimple.php where the localized captions are stored but the assignment to showHidePot_mess is not working.
$showHideOpt_mess = $this->srchPanelAttrs['ctrlTypeComboStatus'] ? "Απόκρυψη επιλογών" : "Εμφάνιση επιλογών";
// show criteries div
$xt->assign("showHideCtrls_attrs", 'onclick="searchController'.$this->id.'.toggleCtrlChooseMenu();"');
// show search type opt
$xt->assign("showHideCtrlsOpt_attrs", ' onclick="searchController'.$this->id.'.toggleCtrlTypeCombo();"');
// show hide search type opt message
$xt->assign("showHideOpt_mess", $showHideOpt_mess);
