Why the focus not goes to search text using jquery with iscroll.?

Why the focus not goes to search text using jquery with iscroll.?

I am implementing search functionality with iscroll library .I am facing
one issue my search text is not focus (mean div scroller not scroll).But
when I used without iscroll library it goes fine.So I thing there is a
problem in this code.
scrollTop: $('.match').eq(searchIndex).get(0).offsetTop
here is my fiddle. http://jsfiddle.net/naveennsit/yab6s/4/
Please for sachin .it does not goes to search position ? what should i
used insteaad od this..