A
This container has a z-Index of 200.
B
This container has a z-Index of 100. It has two subcontainers, opened by jqModal.
Show C
Show D
нажми меня, только нежно
C
This container has a z-Index of 300. (If z-Index exists on a jqModalized element, it will take priority over the one passed via Javascript. This allows greater designer control.)

READ: I am part of B's stacking order, therefore my base z-Index cannot exceed 100. This is why the overlay covers me (it has a z-Index of 299).
D
This container has a z-Index of 300. (If z-Index exists on a jqModalized element, it will take priority over the one passed via Javascript. This allows greater designer control.)

READ: I am called with toTop passed as an argument. This will cause jqModal to position me as a direct child of the body tag while opened, and to restore my original DOM position when closed. This allows me to overcome my container's restraint and to achieve a base z-Index of 300.
E
Этот контейнер вызывается не через a href,
а через a onClick
Смотрим сурс, действительно всё просто