//Single LIne Try Catch Block.  Catches errors such as use of undefined functions or methods, or attempting to reference fields of a null object.
try { RunServerSideCustomCode(); } catch(err){ var s = "Error caught by catch block: " + err.toString(); gs.error(s); gs.addErrorMessage(s); }

function RunServerSideCustomCode(){
	//Write custom code here...
	null.MyInvalidFunctionCall();
}