flesler/jquery.serialScroll — pull request #4 by luvtechno (2012-09-27 10:26:37+00:00)
Title: Fix condition to check whether a argument is number or not

Looks like this condition is meant to test whether `pos` is numeric or not, so it'll work properly for cases like `jump` function is called after clicking navigation elements.

```javascript
nav = $(nav, context).bind(event, function( e ){
e.data = Math.round(getItems().length / nav.length) * nav.index(this);
jump( e, this );
});
```

`isNaN(x)` doesn't seem appropriate for this purpose as it returns false when `x` can be typecasted to a number, and in fact when a DOM element is passed like this case (at least with the latest Chrome).

https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/isNaN