Selectivizr is a JavaScript utility that emulates CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8. Simply include the script in your pages and selectivizr will do the rest.
Selectivizr requires a JavaScript library to work. If your website already uses one of the 7 supported libraries (jQuery, Prototype, etc…) then you just need to add the Selectivizr script to your pages.
Selectivizr works automatically so you don’t need any JavaScript knowledge to use it.