+
+ // zindex can change, re-check it and set it if necessary
+ var listParent = Ext.getDom(this.getListParent() || Ext.getBody()),
+ zindex = parseInt(Ext.fly(listParent).getStyle('z-index') ,10);
+ if (!zindex){
+ zindex = this.getParentZIndex();
+ }
+ if (zindex) {
+ this.list.setZIndex(zindex + 5);
+ }