Description of problem:


Version-Release number of selected component (if applicable):
tcms-3.5.0-4

How reproducible:
100%

Steps to Reproduce:
1.Enter into a plan.
2.Click "Reviewing Cases" label.
3.Click "Show filter options" link.
4.At this moment, the filter options section will expanded, and the link of "Show filter options" will change to the link of "Hide filter options", Click "Filter cases" button.
  
Actual results:
After above step 4, the link of "Hide filter options" will change to "Show filter options" link but the filter options section is still expanded.
please see the screen-shot in the attachment 'Show Filter Options bug.png'

Expected results:
After above step 4, the link of "Hide filter options" should be remained as "Hide filter options" link when the filter options section is still expanded.

Additional info: