throws errors on pages with no video tags

[abritinthebay]

This is a problem if you're building a library which may or may not have video on page load. For example in any modern javascript application.

Simple fix - in videosub_main add this as the second line:

if(!myVideo) {
return;
}

and then add below the domReady call:

$VIDEOSUB.fn.videosub = videosub_main;

So the code is callable when needed. In fact I'd suggest removing the dom call entirely.