It doesn't look like it's global from the XPages API.

 

Is the script library inserted (Resources) in a custom control/do you call it from a custom control and the script is in the XPage? 

 

To test if it's available, create a computed field with the value: 

 

If the computed field value (in the browser) is undefined, the function isn't available. It should show function.

 

 

I also don't think it's a global function. I'm just confused by the weird output.

The function is defined in a library which is inserted as a resource.