IE8 compatilibility in fixed columns error on line 61

xawixawxaw

I'm in the middle of IE compatibility debugging, Fixed columns are OK with IE9+ until I get to debug on IE8 that says there is an error in Line 61

b.style.width=u(g)

I try to recreate the bug and here is the link :
https://jsfiddle.net/xawixawxaw/1dad06wv/4/embedded/result/

Please help, I tried resize/desize my table but it wont help :(