I have a site that has both Mootools and jQuery present. How will selectivizr choose between them? Is there a way of forcing selectivizr to use Mootools?
Selectivizr will automatically detect the best JavaScript library for the job. If you're already using a library and it doesn't support the selectors you need - just include another one.
from their website (http://selectivizr.com/) last paragraph first column first block…