How to destroy() Optiscroll?

First, thx 4 your great plugin! Secondly, how can I destroy() it on the jQuery way?

For Example, I initialize it like this:

$(document).ready(function (){
    scrollbar();
});

function scrollbar(){
    $('.box').optiscroll();
}

And try to destroy it like this (not working):

$(document).ready(function (){
    if ($('body').outerWidth() <= 800 ) {
       scrollbar.destroy();
    }
});

Whats my fail?

[albertogasparin]

You have to call destroy on the Optiscroll instance, not on the function that creates it. You can get it by using data('optiscroll') on the element that has Optiscroll:

$(document).ready(function (){
    if ($('body').outerWidth() <= 800 ) {
       $('.box').data('optiscroll').destroy();
    }
});

[Overpowered]

Thx again for your great support! Works perfect now.