I want to use following codes to customize left navigation menus. Full codes can be find in customized left navigation.txt.

cloak.toggle.type = custom
cloak.toggle.close = TestToggleInTheme^arrow_open.PNG
cloak.toggle.open = TestToggleInTheme^arrow_close.PNG

The problem is the customized left navigation cannot work for the whole space.
If I put the same codes to content page the navigation bar can work as expected. See TestToggleInTheme.PNG.
If the content page doesn't include above codes the navigation bar fails. See TestToggleInTheme2.PNG.

How to fix this? Thanks in advance.