I'm working with CSS3PIE in Asp.net MVC4 with IE8, there are several element need implement rounded corner with it; but I found that most time only the first element was rendered as a circle, others will keep as square just like nothing was done to it.

I checked and found that all element has same value of "_pieId" property, I think this is the root cause of it, but I don't how does it generated.

Please give me some suggestion, thanks!