I changed from using MathJAX to jqMath recently, but I'm having trouble displaying roots with another base than 2: √^a{b^c}
will display correctly in Firefox:
But really ugly in Chrome: 
This is both on Linux and OS X; have not tried others yet. Anybody got solution for this? Is seems a shame to have it rendering so ugly on Chrome...?
Chrome doesn't support MathML natively, sigh, so jqMath is not so pretty there. See:
jqMath: how to improve the display of vectors and super/subscripts on an android app's webview (this is about android, but the same answer goes for chrome)
Chrome bug report / discussion