need to click on a tabNavigator which has some views..

[submitsim]

How Can I click on TabNavigator??

<mx:TabNavigator id="mainSs" width="100%" height="100%" paddingTop="0" historyManagementEnabled="false" tabHeight="26">

<view:EditView label="Search/Edit Record" id="edit"                     user="{model_Me.user_name}"/>

<view:UploadView label="Upload File" id="upload"                        enabled="{model.user.userInRoleForApp( 'RAP', 'UPLOAD' )}" user="{model_Me.user_name}"
uploadErrors="{model_Me.uploadErrors_found}"/>  

/mx:TabNavigator

I am trying the following, But, not working.

((JavascriptExecutor) webDriver).executeScript("document.getElementById('"+flashObjectId+"').fp_click({
id:'mainSs', label:'Upload File'})");

OR

((JavascriptExecutor) webDriver).executeScript("document.getElementById('"+flashObjectId+"').fp_click({
id:'mainSs', id:'upload'})");

So, Can u help Please??