function showAnswers() {
  document.QuestionForm.H1.style.display='block';
  document.QuestionForm.H2.style.display='block';
  document.QuestionForm.H3.style.display='block';
  document.QuestionForm.H4.style.display='block';
  document.QuestionForm.H5.style.display='block';
  
 }

function Submit() {
 var message="";
 var count=0;
 var score;
 var answer="";
 var problem_count=5;

//check blank answers
	if (isBlank(document.QuestionForm.T1.value)||isBlank(document.QuestionForm.T2.value)||isBlank(document.QuestionForm.T3.value)||isBlank(document.QuestionForm.T4.value)||
		isBlank(document.QuestionForm.T5.value)) 
	{
			var question=confirm('You have not completed all questions yet. Are you sure you want to submit the test? ');
			if (!question){
				return false;	
		}
	}

//continue .. 
 ridallcomma();
 
//check answers and calculate score
 if (document.QuestionForm.T1.value*1==document.QuestionForm.H1.value){
		count=count+1;
		answer=answer+document.QuestionForm.T1.value+";"
 }
 else {
	 document.QuestionForm.H1.style.display='block';
 }
 if (document.QuestionForm.T2.value*1==document.QuestionForm.H2.value){
		count=count+1;
		answer=answer+document.QuestionForm.T2.value+";"

 }
 else {
	 document.QuestionForm.H2.style.display='block';
 }
 if (document.QuestionForm.T3.value*1==document.QuestionForm.H3.value){
		count=count+1;
		answer=answer+document.QuestionForm.T3.value+";"

 }
  else {
	 document.QuestionForm.H3.style.display='block';
 }

 if (document.QuestionForm.T4.value*1==document.QuestionForm.H4.value){
		count=count+1;
 }
 else {
	 document.QuestionForm.H4.style.display='block';
	 answer=answer+document.QuestionForm.T4.value+";"

 }

 if (document.QuestionForm.T5.value*1==document.QuestionForm.H5.value){
		count=count+1;
 }
  else {
	 document.QuestionForm.H5.style.display='block';
	 answer=answer+document.QuestionForm.T5.value;

 }



  score=Math.ceil(count/problem_count * 100) ;
  document.QuestionForm.score.value=score;
  document.QuestionForm.answer.value=answer;

  showScore (score);
  disableForm();
}

function disableForm(){
 //hide Submit button
  document.all.btn_submit.style.display = 'none';
  document.all.btn_exit.style.display = 'block';
  //disable input fields, need to figure out later ...

}

function isBlank(entry){
	if(entry==null ){return true;}
	for(var i=0;i<entry.length;i++) {
		if ((entry.charAt(i)!=' ')&&(entry.charAt(i)!="\t")&&(entry.charAt(i)!="\n")&&(entry.charAt(i)!="\r")){return false; }
		}
	return true;
}


function ridcomma(entry) {
   //function to rid , in input
	comma= ","; // replace this
	temp = "" + entry; // temporary holder

	while (temp.indexOf(comma)>-1) {
		pos= temp.indexOf(comma);
		temp = "" + (temp.substring(0, pos) +  temp.substring((pos + comma.length), temp.length));
	}
	return temp;
}

function ridallcomma(){
	document.QuestionForm.T1.value = ridcomma(document.QuestionForm.T1.value);
	document.QuestionForm.T2.value = ridcomma(document.QuestionForm.T2.value);
	document.QuestionForm.T3.value = ridcomma(document.QuestionForm.T3.value);
	document.QuestionForm.T4.value = ridcomma(document.QuestionForm.T4.value);
	document.QuestionForm.T5.value = ridcomma(document.QuestionForm.T5.value);
}


function showScore(score) {

	document.getElementById("score1").innerHTML=score ;
	document.getElementById("score2").innerHTML=score ;
	document.getElementById("score3").innerHTML=score ;
	document.getElementById("score4").innerHTML=score ;

if (score<40 ){
		document.all.msg_excellent.style.display = 'none';
		document.all.msg_good.style.display = 'none';
		document.all.msg_tryagain.style.display = 'block';
		document.all.msg_excellent2.style.display = 'none';
		document.all.msg_good2.style.display = 'none';
		document.all.msg_tryagain2.style.display = 'block';

 }
  if (score>=40 && score<80  ){

		document.all.msg_excellent.style.display = 'none';
		document.all.msg_good.style.display = 'block';
		document.all.msg_tryagain.style.display = 'none';
		document.all.msg_excellent2.style.display = 'none';
		document.all.msg_good2.style.display = 'block';
		document.all.msg_tryagain2.style.display = 'none';

    }
   if (score>=80 ){

		document.all.msg_excellent.style.display = 'block';
		document.all.msg_good.style.display = 'none';
		document.all.msg_tryagain.style.display = 'none';
		document.all.msg_excellent2.style.display = 'block';
		document.all.msg_good2.style.display = 'none';
		document.all.msg_tryagain2.style.display = 'none';
    }


}