added reset button in quiz page

Author: sadhanareddy

src/lab/final-build/pre

@@ -239,6 +239,7 @@ function panel3()
 </ol>
 <br />
 <input type="button" onClick="checkQuiz()" value="Check Quiz"><br><br>
+<input type="button" value="Reset" onClick="document.quiz.reset()">
 <hr>
 <textarea cols="80" rows="10" name="output"></textarea><br>
 </form>

src/lab/final-build/preQuiz4.php

@@ -246,6 +246,7 @@ function panel3()
 </ol>
 <br />
 <input type="button" onClick="checkQuiz()" value="Check Quiz"><br><br>
+<input type="button" value="Reset" onClick="document.quiz.reset()">
 <hr>
 <textarea cols="80" rows="10" name="output"></textarea><br>
 </form>

src/lab/final-build/preQuiz5.php

@@ -242,6 +242,7 @@ function panel3()
 </ol>
 <br />
 <input type="button" onClick="checkQuiz()" value="Check Quiz"><br><br>
+<input type="button" value="Reset" onClick="document.quiz.reset()">
 <hr>
 <textarea cols="80" rows="10" name="output"></textarea><br>
 </form>