Don't reset pencilmarks on begin solving.

Author: intrepidcoder

index.html

@@ -108,7 +108,7 @@
 		</div>
 
 		<div id="begin_solving">
-			<input type="button" value="Begin Solving" id="begin_solving_button" class="large_button" title="Submit the entered numbers as clues and begin solving the sudoku puzzle." onclick="submitGivens(); clearPencilmarks();" onmouseover="this.classList.add('large_button_hover'); this.classList.remove('large_button');" onmousedown="this.classList.add('large_button_hover'); this.classList.remove('large_button');" onmouseout="this.classList.add('large_button'); this.classList.remove('large_button_hover');" />
+			<input type="button" value="Begin Solving" id="begin_solving_button" class="large_button" title="Submit the entered numbers as clues and begin solving the sudoku puzzle." onclick="submitGivens();" onmouseover="this.classList.add('large_button_hover'); this.classList.remove('large_button');" onmousedown="this.classList.add('large_button_hover'); this.classList.remove('large_button');" onmouseout="this.classList.add('large_button'); this.classList.remove('large_button_hover');" />
 		</div>
 
 		<div id="side_bar">