The problem is that you're using the id selector in your $("#cont").load('testpage2.html #res')
jQuery will only load that section of page 2, therefore no Javascript is loaded. If you remove the id selector it will load the whole page including the Javascript.
$("#cont").load('testpage2.html')
Alternatively, you can place your Javascript within the res
div, then that should work.
On a side note, you're missing various line ending semi colons in your code, which is not good.