g.Raphael 0.51 error in IE

Question

I'm trying to do generate a sample pie chart from raphael.min.js version 2.1.2

I'm using

raphael.min.js

and

 g.raphael.min.js

in my code.

ReferenceError: Raphael is not defined in corresponding to the line of code :-

--> Raphael.el.popup = function (d, a, b, f) {

Please help.

Thanx in advance.