function setSource(dest){
URLArg = location.search

if (URLArg)  {  // if there's a search argument in URL check it first	
	ID=sourceParm(URLArg);
}else{  //go cookie route
	sourceID = GetCookie('Referrer')
	if (sourceID) {
		ID=setID(sourceID); // setID is set in each html page or may be undefined
	}
}
if (ID) {
	document.appform.source.value = ID;
}

return true;
} // end setSource