I'm working on a site where we are using the slide function from jquery-ui.

The Google-hosted minified version of jquery-ui weighs 63KB - this is for the whole library. The custom download of just the slide function weighs 14KB. 

Obviously if a user has cached the Google hosted version its a no-brainer, but if they haven't it will take longer to load as I could just lump the custom jquery-ui slide function inside of my main.js file. 

I guess it comes down to how many other sites using jquery-ui (if this was just for the normal jquery the above would be a no-brainer as loads of sites use jquery, but I'm a bit unsure as per the usage of jquery-ui)...

I can't work out what's the best thing to do in the above scenario?