cssProps issue in ie and jquery 1.9

I ran into an issue while trying to render Tips in ie7.  After some tracing I narrowed it down to line 38 in tips.js.  In ie7 with jQuery 1.9 cur = props[i] would return a function instead of the property name.  By removing line 38 and changing i to cur in the previous line, cur gets each property name and render tips with out error.