treetable HTML broken under liferay

hello

I’ve got a treetable which works fine in tomcat but in liferay(using tomcat) HTML is generated differently in first column and expand/collapse arrow is placed over the text.

HTML in liferay:

exampletext

HTML in tomcat (in fact the tomcat of liferay installation but using a direct link bypassig liferay):

exampletext

What could cause the padding-left and style=width to get not generated in liferay case? Java source and css files in both cases are the same.
Any workarounds?

br,
Pekka