window.addEvent is not a function

I got error Uncaught TypeError: window.addEvent is not a function, I think it’s the init order of the script since when i tried to run in onconsole it work perfectly.

Is there any settings i missed? and I use bwp-minifier by the way.

Here is the sample link: http://www.ariona.net/mengenal-css3-viewport-unit/

https://wordpress.org/plugins/enlighter/