we have found an anormal beahviour in dhtmlxwindows.js because there is an iframe:
It’s a problem for us because this iframe is visible and our window show this iframe (with white backgorund) between the header and the content.
Sorry for my english, best regards,
It seems that you didn’t include the dhtmlxwindows.css file. It have class dhx_ie6_wincover_forsel in it which allows render this
iframe in the different way. (This iframe is needed for IE only).