this.maskEl.bottom.setSize(Roo.lib.Dom.getDocumentWidth(), Roo.lib.Dom.getDocumentHeight() - box.bottom - this.padding);
this.maskEl.bottom.setLeft(0);
this.maskEl.bottom.setTop(box.bottom + this.padding);
this.maskEl.bottom.show();
this.maskEl.right.setStyle('position', 'absolute');
this.maskEl.bottom.setSize(Roo.lib.Dom.getDocumentWidth(), Roo.lib.Dom.getDocumentHeight() - box.bottom - this.padding);
this.maskEl.bottom.setLeft(0);
this.maskEl.bottom.setTop(box.bottom + this.padding);
this.maskEl.bottom.show();
this.maskEl.right.setStyle('position', 'absolute');