Raphaeljs charts bar index fetching

Question

Hi,

Is there a way to get a bar's index value?

So for example

bar_chart.hover(function() { 
        var test = this.bar.index; 
}); 

Or something to that effect? Basically, if the bar chart consists of 10 colums and I click on the third, I would want the value 3 returned.

Thanks in advance.

David