function CheckList(f){
	var noneselected=0;
	for (var i=0; i<f.MainSICCode.length; i++){
		if (f.MainSICCode.options[i].selected){
			noneselected++;
		}
	}
	if (noneselected != 0) {
		return true;
	}	
	else {
		return false;
	}	
}