What is the fastest way to sum up an array in JavaScript? A quick search turns over [a few different methods](http://www.gscottolson.com/weblog/2007/12/09/sum-array-prototype-for-javascript/), but I would like a native solution if possible. This will run under SpiderMonkey. 

Thinking very inside-the-box I have been using:

```
var count = 0;
for(var i = 0; i < array.length; i++)
{
    count = count + array[i];
}

```

I'm sure there is a better way then straight iteration.