Yep, z-index of 1000 in the .overlay and z-index:1001 in a href="javascript:void(0)" it works beautifully. The full source is linked in below the page in https://site000.lmsnet.ch/.
P.S. The real presentation is in section 7 of the course in main edunet.lk site. ;)
P.S. The real presentation is in section 7 of the course in main edunet.lk site. ;)