absolute positioned anchor tag (with no text) not clickable in IE

Question

I have two anchors positioned absolute on top of an image, the links are clickable in other browsers (Chrome, FF, Safari) but not in IE (tested in 8 & 9 so far)

Answer 1

Transplanted from a comment I posted some time ago.

Little longer, but still no traffic, base 64 encoded transparent gif:

background-image: url('data:image/gif;base64,R0lGODlhAQABAPAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICR‌​AEAOw==')

This has its own pros/cons, but can be useful. Also:

background-color: rgba(0,0,0,0)

I've used this one more recently