How to change tabBar's Tab

I have one tabbar , each tab contain one aspx file, hrefmode is “iframe”

When I click on link in �k1.aspx� then “a3” tab should be activate ,



     Login Please (link in k1.aspx)



But will have “tabbar” undefined error message



Please Help me, Thks a Lot !!



    

========= start.html











======== tabs_master.xml

<?xml version="1.0" encoding="utf-8"?>





Resource

Login

Server

Home









======== k1.aspx



Login Please

In case of “iframe” based mode tab page is a child page relative to parent document, so valid code will be

Login Please