fix loading multple threesixty sliders

[williscool]

by making sure the progress loader selectors dont collide.

just needed to make sure we find the element under the base selector.

also corrected the documentation comment on top of the function name

[williscool]

also found another fun bug

if you control the rotation with window.onscroll and you hit the gotoAndPlay function (by the scroll event triggering) before the slider has loaded all of the images... it will throw a bunch of exceptions in the hidePreviousFrame and showCurrentFrame buttons.

I think this has to do with base.getNormalizedCurrentFrame() being calculated with the wrong number of images and thrown off by what gotoAndPlay does to the internal representation of end frame.

Fix I did was to just put my window.onscroll function into the onReady call back.

And it all just worked.

Just thought others might like to know

• Will