fix modal examples on js page, update modal close button positioning

docs/javascript.html

@@ -211,7 +211,7 @@
           <!-- sample modal content -->
           <div id="myModal" class="modal hide fade">
             <div class="modal-header">
-              <a href="#" class="close" data-dismiss="modal" >&times;</a>
+              <a class="close" data-dismiss="modal" >&times;</a>
               <h3>Modal Heading</h3>
             </div>
             <div class="modal-body">
@@ -271,7 +271,7 @@
 <pre class="prettyprint linenums">
 &lt;div class="modal"&gt;
   &lt;div class="modal-header"&gt;
-    &lt;a href="#" class="close js-dismiss"&gt;&times;&lt;/a&gt;
+    &lt;a class="close" data-dismiss="modal"&gt;&times;&lt;/a&gt;
     &lt;h3&gt;Modal header&lt;/h3&gt;
   &lt;/div&gt;
   &lt;div class="modal-body"&gt;