forked from mirror/_s
32 lines
1.0 KiB
JavaScript
32 lines
1.0 KiB
JavaScript
/**
|
|
* navigation.js
|
|
*
|
|
* Handles toggling the navigation menu for small screens.
|
|
*/
|
|
( function() {
|
|
var container = document.getElementById( 'site-navigation' ),
|
|
button = container.getElementsByTagName( 'h1' )[0],
|
|
menu = container.getElementsByTagName( 'ul' )[0];
|
|
|
|
if ( undefined == button || undefined == menu )
|
|
return false;
|
|
|
|
button.onclick = function() {
|
|
if ( -1 == menu.className.indexOf( 'nav-menu' ) )
|
|
menu.className = 'nav-menu';
|
|
|
|
if ( -1 != button.className.indexOf( 'toggled-on' ) ) {
|
|
button.className = button.className.replace( ' toggled-on', '' );
|
|
menu.className = menu.className.replace( ' toggled-on', '' );
|
|
container.className = container.className.replace( 'main-small-navigation', 'navigation-main' );
|
|
} else {
|
|
button.className += ' toggled-on';
|
|
menu.className += ' toggled-on';
|
|
container.className = container.className.replace( 'navigation-main', 'main-small-navigation' );
|
|
}
|
|
};
|
|
|
|
// Hide menu toggle button if menu is empty.
|
|
if ( ! menu.childNodes.length )
|
|
button.style.display = 'none';
|
|
} )(); |