ok Batalf, i hope you will believe me
i changed your demos codes. you can see in your codes
1. Click to Load Content ( you will see alert message)
2. Click to test1.... ( you will see alert message again because default tab was loaded again.)
3. return to default tab
4. click to Test 2 ( you will NOT alert message)
i hope i could explain the problem. (sory for my english..maybe bad)