Expose the toggling function at the window level in CRM 4.0

After create a function in page load event of any entity in CRM and tried to call it from onSave or any attribute OnChange event
then you don't required to type the same function again and again just toggle this function at the bottom of pageLoad
event, to do this use the following code

//Expose the toggling function at the window level
this.functionName = functionName;