Snow on/off with cookie

[C63]

Hi, i found some nice snow effect script, but i want to add on/off function for my users, so they can turn snow effect off if they don't like it, and turn it on when they want to see snow effect. So i need function on/off with cookie so when user turn off snow effect and come back tomorrow he will not see snow until he clicks again on snow effect on.

Link to script: SNOW EFFECT

ty for help.

[C63]

nobody ?