Fixing control panel checkboxes

Samples/index.html

@@ -184,13 +184,13 @@
                 <div id="controlsZone">
                     <div id="leftPart">
                         <p>
-                            <input type="checkbox" id="wireframe" />Wireframe
+                            <label><input type="checkbox" id="wireframe" /> Wireframe</label>
                         </p>
                         <p>
-                            <input type="checkbox" id="enableStats" checked="true" />Statistics<br />
+                            <label><input type="checkbox" id="enableStats" checked="true" /> Statistics</label>
                         </p>
                         <p>
-                            <input type="checkbox" id="collisions" checked="true" />Collisions<br />
+                            <label><input type="checkbox" id="collisions" checked="true" /> Collisions</label>
                         </p>
                         <p>
                             <button id="fullscreen">Switch fullscreen mode</button>