tweak css for topbar to bring back z-index fix; update javascript markup and some heading text

docs/assets/css/docs.css

@@ -270,6 +270,9 @@ section > .row {
 
 /* Topbar in js docs
 ------------------------- */
+#bootstrap-js .topbar-wrapper {
+  z-index: 1;
+}
 #bootstrap-js .topbar-wrapper .topbar {
   position: absolute;
   margin: 0 -20px;

docs/javascript.html

@@ -85,7 +85,7 @@
           <a href="../js/bootstrap-modal.js" target="_blank" class="btn primary">Download</a>
         </div>
         <div class="span12 columns">
-          <h2>Using bootstrap-modal</h2>
+          <h3>Using bootstrap-modal</h3>
           <pre class="prettyprint linenums">$('#modal-content').modal(options)</pre>
           <h3>Options</h3>
           <ul>
@@ -175,7 +175,7 @@ $('#modal-content')
           <a href="../js/bootstrap-dropdown.js" target="_blank" class="btn primary">Download</a>
         </div>
         <div class="span12 columns">
-          <h2>Using boostrap-dropdown.js</h2>
+          <h3>Using boostrap-dropdown.js</h3>
           <pre class="prettyprint linenums">$('#topbar').dropdown()</pre>
           <h3>Method</h3>
           <h4>$().dropdown</h4>
@@ -241,7 +241,7 @@ $('#modal-content')
           <a href="../js/bootstrap-tabs.js" target="_blank" class="btn primary">Download</a>
         </div>
         <div class="span12 columns">
-          <h2>Using boostrap-tabs.js</h2>
+          <h3>Using boostrap-tabs.js</h3>
           <pre class="prettyprint linenums">$('.tabs').tabs()</pre>
           <h3>Method</h3>
           <h4>$().tabs or $().pills</h4>
@@ -308,7 +308,7 @@ Sunt qui biodiesel mollit officia, fanny pack put a bird on it thundercats seita
           <a href="../js/bootstrap-twipsy.js" target="_blank" class="btn primary">Download</a>
         </div>
         <div class="span12 columns">
-          <h2>Using bootstrap-twipsy.js</h2>
+          <h3>Using bootstrap-twipsy.js</h3>
           <pre class="prettyprint linenums">$('#example').twipsy(options)</pre>
           <h3>Options</h3>
           <ul>
@@ -363,7 +363,7 @@ Sunt qui biodiesel mollit officia, fanny pack put a bird on it thundercats seita
           <a href="../js/bootstrap-popover.js" target="_blank" class="btn primary">Download</a>
         </div>
         <div class="span12 columns">
-          <h2>Using boostrap-popover.js</h2>
+          <h3>Using boostrap-popover.js</h3>
           <pre class="prettyprint linenums">$('#example').popover(options)</pre>
           <h3>Options</h3>
           <ul>
@@ -417,7 +417,7 @@ Sunt qui biodiesel mollit officia, fanny pack put a bird on it thundercats seita
           <a href="../js/bootstrap-alerts.js" target="_blank" class="btn primary">Download</a>
         </div>
         <div class="span12 columns">
-          <h2>Using bootstrap-alert</h2>
+          <h3>Using bootstrap-alerts.js</h3>
           <pre class="prettyprint linenums">$(".alert-message").alert()</pre>
           <h3>Methods</h3>
           <h4>$().alert</h4>