edit

html/index.html

@@ -265,7 +265,7 @@ <h2>Timer: <span id="timer">30</span> seconds</h2>
         var cells = document.querySelectorAll("td");
         for(var i=0;i<cells.length;i++)
         {
-            cells[i].addEventListener("click",function()
+            cells[i].addEventListener("mousedown",function()
             {
                 /*this.addEventListener("mouseover",function(){
                     this.style.backgroundColor="blue";