https://www.varia-bau.de/files/varia-bau-theme/scripts/smart-navi.js

1jQuery(function() {
2		
3		jQuery('#smart-navi').click(function(){
4			jQuery('#header .mod_navigation .level_1').toggleClass('active');
5			return false;
6		});
7		
8		// see whether device supports touch events (a bit simplistic, but...)
9        var hasTouch = ("ontouchstart" in window);
10        var iOS5 = /iPad|iPod|iPhone/.test(navigator.platform) && "matchMedia" in window;
11         
12        // hook touch events for drop-down menus
13        // NB: if has touch events, then has standards event handling too
14        // but we don't want to run this code on iOS5+
15        if (hasTouch && document.querySelectorAll && !iOS5) {
16            var i, len, element,
17                dropdowns = document.querySelectorAll("#header .mod_navigation li > a.submenu");
18         
19            function menuTouch(event) {
20                // toggle flag for preventing click for this link
21                var i, len, noclick = !(this.dataNoclick);
22         
23                // reset flag on all links
24                for (i = 0, len = dropdowns.length; i < len; ++i) {
25                    dropdowns[i].dataNoclick = false;
26                }
27         
28                // set new flag value and focus on dropdown menu
29                this.dataNoclick = noclick;
30                this.focus();
31            }
32         
33            function menuClick(event) {
34                // if click isn't wanted, prevent it
35                if (this.dataNoclick) {
36                    event.preventDefault();
37                }
38            }
39         
40            for (i = 0, len = dropdowns.length; i < len; ++i) {
41                element = dropdowns[i];
42                element.dataNoclick = false;
43                element.addEventListener("touchstart", menuTouch, false);
44                element.addEventListener("click", menuClick, false);
45            }
46            
47       
48		
49		
50		}
51
52
53});