What happened to my dolphin brownser drag down tabs? *pic included*

[luigic81]

I loved how I used to be able to drag down the top of any webpage and all my tabs showed up on a nice black screen along with the options to open a new tab or close open tabs. The drag down icon I am referring to is in the very top right of this pic,(on top on the ride sidebar, the icon is the 2 green boxes with a down arrow in the larger box)

but somehow that disappeared and now in its place is a "puzzle piece" icon that takes me to the add on menu...??? How do I get my drag down tab thing back???

here's a pic of the puzzle piece icon