OpenLayers tabsheet

hi,

I have some problem with openlayers in the tabsheets

package com.example.demomap;

import org.vaadin.vol.OpenLayersMap;
import org.vaadin.vol.OpenStreetMapLayer;

import com.vaadin.ui.Component;
import com.vaadin.ui.TabSheet;
import com.vaadin.ui.TabSheet.SelectedTabChangeEvent;
import com.vaadin.ui.TabSheet.Tab;
import com.vaadin.ui.VerticalLayout;

public class TabSheetClosingExample extends VerticalLayout implements
TabSheet.SelectedTabChangeListener, TabSheet.CloseHandler {

private TabSheet t;

public TabSheetClosingExample() {
//

t = new TabSheet();
t.setHeight("500px");
t.setWidth("500px");
for(int i=0; i<10; i++){
OpenLayersMap map = new OpenLayersMap();
final OpenStreetMapLayer osm = new OpenStreetMapLayer();
map.addLayer(osm);
map.setWidth("100px");
map.setHeight("100px");
Tab tab = t.addTab(map,i);

tab.setClosable(true);
}

t.addListener(this);
t.setCloseHandler(this);
t.setImmediate(true);
addComponent(t);
}

public void selectedTabChange(SelectedTabChangeEvent event) {
TabSheet tabsheet = event.getTabSheet();
Tab tab = tabsheet.getTab(tabsheet.getSelectedTab());
if (tab != null) {
getWindow().showNotification("Selected tab: " + tab.getCaption());
}
}

public void onTabClose(TabSheet tabsheet, Component tabContent) {
tabsheet.removeComponent(tabContent);
}
}

when i close a previews tab, openlayers make a javascript error

JavaScriptException: (NOT_FOUND_ERR): NOT_FOUND_ERR: DOM Exception 8
code: 8
INDEX_SIZE_ERR: 1
DOMSTRING_SIZE_ERR: 2
HIERARCHY_REQUEST_ERR: 3
WRONG_DOCUMENT_ERR: 4
INVALID_CHARACTER_ERR: 5
NO_DATA_ALLOWED_ERR: 6
NO_MODIFICATION_ALLOWED_ERR: 7
NOT_FOUND_ERR: 8
NOT_SUPPORTED_ERR: 9
INUSE_ATTRIBUTE_ERR: 10
INVALID_STATE_ERR: 11
SYNTAX_ERR: 12
INVALID_MODIFICATION_ERR: 13
NAMESPACE_ERR: 14
INVALID_ACCESS_ERR: 15
VALIDATION_ERR: 16
TYPE_MISMATCH_ERR: 17
SECURITY_ERR: 18
NETWORK_ERR: 19
ABORT_ERR: 20
URL_MISMATCH_ERR: 21
QUOTA_EXCEEDED_ERR: 22
TIMEOUT_ERR: 23
INVALID_NODE_TYPE_ERR: 24
DATA_CLONE_ERR: 25

have any idea?