IE8 Barchart tooltip popup not showing up

[gppdev144]

I've been trying to solve the issue of the barchart tooltip/datatip popup not showing up in IE8. Debugging, I see that flotr2 is throwing a "TypeError: Object doesn't support property or method 'createEvent'" error on line 433( portion of the code pasted below ) :

var evt = doc.createEvent(isNative ? 'HTMLEvents' : 'UIEvents')

Please help me. I'm a new user of flotr2 and I've been trying to solve this issue for 3 days :(