[webkit-dev] background transparency of webkitwebview on gtk port

hi all, iam trying to make the webview container transparent to show through its parent's background. i set the webview to transparent and also do not have background color property set. i find that the background still gets drawn. i suspect this is the containers background? is there a way to prevent the drawing of the containers background (i tried gtk_widget_set_app_paintable + gdk_window_set_back_pixmap on the webview widget but does not work). i tried changing the parent of webview to event box which has transparency setting, but does not help either. Appreciate any pointers. thanks, Zaheer