IE8 bugfix: changed use of .forEach to jQ $.each()

I'm trying to do some early browser testing on some dynamic pages I'm creating which use this slider widget. Problem I found, is that the use of .forEach causes them to not work in IE8. 

I've changed it to jQuery each, which offers the same functionality in a more browser friendly way. 

I think my code could get cleaned up and avoid self...but code is here for review.