Performance issue

Not so much of an issue but on large json strings it tends to be really slow.currently I'm using it for a json with around 6000 elements and it does the job just fine. It does appear to be working far better if all elements initially are collapsed. In essence:
js/jquery.jsonview.js on line 53 - remove the if/else statement and leave simply the 'else' case
ele = '<li class="object-prop...'
That way even with 6000 elements it does behave alright.