Itex display not appearing correctly

[DryRun]

The question is:
$\int_0^1\int_x^1e^\frac{x}{y}dydx$=$\frac{1}{2}$(e-1)

I have no idea why but my browser shows e^{z/y} instead of e^{x/y} as the itex code is written. I am using Firefox 14.0.1
I tried clearing cache, etc but the problem still persists. Is this some bug with the forum?

 

[tiny-tim]

hi sharks!

(looks ok to me on Safari 4.1.3)

if you have more than one character after ^ or _ you should always put them inside {} …

funny things may happen if you don't! ​