well . you can include js content by putting your Utils into Cycling ’74/jsextensions/ folder .
This way your functions are seen within every JS project used in max .
Personally i would love to have #include directive as an option and be specific to the current project, but thats not possible without writing a compiler for JS (someone did) ,
every changes require recompiling .
There is third option . Pack your utils into Global object inside one JS instance and access it in another .