function grade(){
	var correct=0;
	with(document){
		if(quizform.elements[1].checked){
			correct=correct+1;
		}
		if(quizform.elements[4].checked){
			correct=correct+1;
		}
		if(quizform.elements[10].checked){
			correct=correct+1;
		}
		if(quizform.elements[12].checked){
			correct=correct+1;
		}
		if(quizform.elements[18].checked){
			correct=correct+1;
		}
		cleanform.correct.value=correct;
	 	cleanform.submit();
	}
}