Single-button checkbox handling for query options selection
diff --git a/asterix-app/src/main/resources/webui/querytemplate.html b/asterix-app/src/main/resources/webui/querytemplate.html
index 2abc24b..f8f1125 100644
--- a/asterix-app/src/main/resources/webui/querytemplate.html
+++ b/asterix-app/src/main/resources/webui/querytemplate.html
@@ -17,12 +17,14 @@
 $(document).ready(function() {
 
     $('#checkboxes-on').click(function() {
-        $('#queryform :input').prop('checked', true);
-        return false;
-    });
-
-    $('#checkboxes-off').click(function() {
-        $('form#queryform :input').removeAttr('checked');
+        /* Displays a checkmark to indicate selection/clearing */
+        if ($('#opts').is(":visible")) {
+            $('#opts').hide();
+            $('#queryform :input').prop('checked', false);
+        } else {
+            $('#opts').show();    
+            $('#queryform :input').prop('checked', true);
+        }    
         return false;
     });
 
@@ -31,6 +33,17 @@
         return false;
     });
 
+    $('form#queryform :input').click( function () {
+        /* Hides selection check on uncheck, shows when all 5 selected */
+        if ($(this).val()) {
+            if ($(this).is(':checked') && $('input[type=checkbox]').filter(':checked').length == 5) {
+                $('#opts').show();
+            } else {
+                $('#opts').hide();
+            }
+        }
+    });
+
     $("form#queryform").submit(function() {
         $('#output-message').html("");
         $.post("/", $("form#queryform").serialize(), function(data) {
@@ -147,19 +160,18 @@
             </div>
             
           <div class="btn-group">
+            <button id="checkboxes-on" class="btn"><i id="opts" class="icon-ok" ></i>Select Options</button>
             <button id="clear-query-button" class="btn">Clear Query</button>
-            <button id="checkboxes-on" class="btn">Select All Options</button>
-            <button id="checkboxes-off" class="btn">Clear All Options</button>
+            <!-- <button id="checkboxes-off" class="btn">Clear All Options</button> -->
             <button type="submit" id="run-btn" class="btn btn-custom-darken">Run</button>
           </div>
 
             <div>
-              <label class="checkbox"><input type="checkbox" class="btn" checked="checked" name="print-expr-tree" value="true" /> Print parsed expressions</label>
-              <label class="checkbox"><input type="checkbox" checked="checked" name="print-rewritten-expr-tree" value="true" /> Print rewritten expressions</label>
-              <label class="checkbox"><input type="checkbox" checked="checked" name="print-logical-plan" value="true" /> Print logical plan</label>
-              <label class="checkbox"><input type="checkbox" checked="checked" name="print-optimized-logical-plan" value="true" /> Print optimized logical plan</label>
-              <label class="checkbox"><input type="checkbox"
-                  checked="checked" name="print-job" value="true" /> Print Hyracks job</label>
+              <label class="checkbox optlabel"><input type="checkbox" checked="checked" name="print-expr-tree" value="true" /> Print parsed expressions</label>
+              <label class="checkbox optlabel"><input type="checkbox" checked="checked" name="print-rewritten-expr-tree" value="true" /> Print rewritten expressions</label>
+              <label class="checkbox optlabel"><input type="checkbox" checked="checked" name="print-logical-plan" value="true" /> Print logical plan</label>
+              <label class="checkbox optlabel"><input type="checkbox" checked="checked" name="print-optimized-logical-plan" value="true" /> Print optimized logical plan</label>
+              <label class="checkbox optlabel"><input type="checkbox" checked="checked" name="print-job" value="true" /> Print Hyracks job</label>
             </div>
           </form>
        </div>