TYPO3 Core

If you have a record with a irre child record and you open the parent record and DONT open the irre child record, the hidden functionality (click on the bulb on the right of the irre record) don`t work.

A javascript error will be thrown:

formObj⁰ is undefined

This error occur in the following method:
enableDisableRecord: function(objectId) {
var elName = this.parseObjectId('full', objectId, 2, 0, true);
var imageObj = $(objectId+'_disabled');
var valueObj = document.getElementsByName(elName+'[hidden]');
var formObj = document.getElementsByName(elName+'[hidden]_0');
var imagePath = '';

if (valueObj && formObj) {
        formObj[0].click();
        imagePath = this.parsePath(imageObj.src);
        imageObj.src = imagePath+(valueObj[0].value > 0 ? 'button_unhide.gif' : 'button_hide.gif');
    }

return false;
...

If you open the irre child record, a click on the bulb will check the hidden checkbox.

(issue imported from #M16102)