updated api.html

Author: mrin9

docs/api.html

@@ -251,28 +251,6 @@ <h2> Attributes</h2>
             </td>
             <td class='default-col'></td>
           </tr>
-
-          <tr>
-            <td class=" attr-col mono bold right">nav-bg-image </td>
-            <td class="gray">
-              URL of navigation bar's background image
-              &nbsp;|&nbsp; <a href="./examples/nav-bg-image.html">Example</a>
-            </td>
-            <td class='default-col'>(empty)</td>
-          </tr>
-          <tr>
-            <td class=" attr-col mono bold right">nav-bg-image-size </td>
-            <td class="gray">navigation bar's background image size (same as css background-size property) allowed values are <br><span class='blue'>
-              auto | length | cover | contain | initial | inherit </span></td>
-            <td class='default-col'></td>
-          </tr>
-          <tr>
-            <td class=" attr-col mono bold right">nav-bg-image-repeat </td>
-            <td class="gray"> navigation bar's background image repeat (same as css background-repeat property) allowed values are <br><span class='blue'>
-              repeat | repeat-x | repeat-y | no-repeat | initial | inherit </span> </td>
-            <td class='default-col'></td>
-          </tr>
-
           <tr>
             <td class=" attr-col mono bold right">nav-text-color </td>
             <td class="gray"> Navigation bar's Text color </td>