Dynamics crm : Error with multiple onload functions from different javascript files

Hi All,

I have added 2 libraries on the same form. One is common and the other is specific to the form.Both have onload functions in it.

wnzl_incident.js is common file
wnzl_incident_fraudcaserequest.js is javascript specific to the form

I am calling first the onload of wnzl_incident.js and then the onload of wnzl_incident_fraudcaserequest.js
This is how the libraries are ordered -

However sometimes i get the below error -
ReferenceError: Web resource method does not exist: Wnzl.Crm.WebResource.Incident.FraudCaseRequest.formOnLoad. However the closest object we found is Wnzl.Crm.WebResource.Incident that contains these properties: ....
Error Details:
Event Name: onload
Function Name: Wnzl.Crm.WebResource.Incident.FraudCaseRequest.formOnLoad
Web Resource Name: wnzl_incident_fraudcaserequest
Solution Name: Active
Publisher Name: dev

How can i make sure that the webresource is loaded before the form loads?
Any help would be appreciated.