Hi) Thanks for replies!

Спасибо))
Maybe I was not clear enough in my explanation: the text layer is the VT title which takes scene name, so text length can be long or short. My idea was to keep the background (looks better) and if the text is too long - then make it drop into two lines.
I adjusted my link a bit (clear cache before looking):
http://vt.most-inform.com/bugs/text/
If you watch the link in Flash, then 'Lower' text is almost what I want to achieve. Just press 'Change lower text html' button and you will see what I wanted to achieve. The ''check_text_size' action works almost fine in Flash, but html5 fails for some reason.
I just thought maybe there's some easier combination of textfield settings to achieve this effect