How to collapse toolbar on blur ?

Hi !

I'm trying by javascript to collapse the toolbar in case of a blur event.

I have already this script for detecting a blur event (and this works).

But HOW detect if the toolbar is not collapse and simulate the "click" on the small arrow in case of blur ?

<SCRIPT>
CKEDITOR.instances['myTextArea'].on('blur', function (event) {
// What to put here ?
});
</SCRIPT>

Thanks for your help !

I'm look for a solution since 2 days ... ;-( I can't found anywhere a solution ...