make enter key work as tab for Fire Fox

Hi Everyone,

Can any one suggest a solution for data entry web form that if we want to replace the tab key and use Enter for moving in-between the controls in FireFox.

I have already applied IE Solution  
i.e. onkeydown="javascript:if(event.charCode==13){event.charCode=9;};

But I need a similar solution for the FireFox. Any idea is appreciated.

Regards

Sadeed
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