improve init function names, improve defers
allow easy usage of console profiler by just changing a var to true
use jquery to detect visiblity
simplify code: use continue statement
call onReady with checkVisibility on withChange

this fixes initializing showed using media queries element
simplify youtube init
remove unused queueNum property
improve checking onReadyQueue for existing elements

don't loop over whole array, instead additionally cache it in el
improve javascript benchmark box

add subTimer