function gradeanswers() { var correctans=0 if (document.checker.variable.value!="1") { document.checker.variable.value=1; var tempans=window.document.quiz.question1.value; var tempans1=window.document.quiz.question2.value; var tempans2=window.document.quiz.question3.value; if(tempans=="") { var tempans="-----"; } if(tempans1=="") { var tempans1="-----"; } if(tempans2=="") { var tempans1="-----"; } var msg=open("","DisplayWindow"); msg.document.write(""); msg.document.write(""+ ""); msg.document.write("

Your results:"); msg.document.writeln("

Problem 1.

"); if(tempans==truevalue[index1]) { var outcome="correct"; correctans++; } else{ var outcome="incorrect"; } msg.document.write('

Your answer of ' + tempans + ' is ' + outcome + '.

'); if(outcome=="incorrect") { msg.document.writeln("

The correct answer is " + truevalue[index1] + ".

"); } msg.document.writeln("

Problem 2.

"); var right_ans=truevalue_1[index2]; if(index2=='5') { var exp_ans=window.document.quiz.exponent.value; if(tempans1==right_ans && exp_ans==exp) { var outcome="correct"; correctans++; } else{ var outcome="incorrect"; } msg.document.write('

Your answer of ' + tempans1 + ' x 10 ^{' + exp_ans + '} is ' + outcome + '.

'); if(outcome=="incorrect") { msg.document.writeln("

The correct answer is 1.65 x 10^-40.

"); } } else{ if(tempans1==right_ans) { var outcome="correct"; correctans++; } else{ var outcome="incorrect"; } msg.document.write('

Your answer of ' + tempans1 + ' is ' + outcome + '.

'); if(outcome=="incorrect") { msg.document.writeln("

The correct answer is " + truevalue_1[index2] + ".

"); } } msg.document.writeln("

Problem 3.

"); if(tempans2==truevalue_2[index3]) { var outcome="correct"; correctans++; } else{ var outcome="incorrect"; } msg.document.write('

Your answer of ' + tempans2 + ' is ' + outcome + '.

'); if(outcome=="incorrect") { msg.document.writeln("

The correct answer is " + truevalue_2[index3] + ".

"); } msg.document.writeln("

Your Total score is: " + correctans + " out of 3.

"); msg.document.close(); } else { alert("Sorry, you cannot resubmit your answers. Click \"Start\" at the top of the page to start over."); } }