+ var elems = document.getElementsByTagName('div');
+ var highest = Number.MIN_SAFE_INTEGER || -(Math.pow(2, 53) - 1);
+ for (var i = 0; i < elems.length; i++) {
+ var zindex = Number.parseInt(
+ document.defaultView.getComputedStyle(elems[i], null).getPropertyValue("z-index"),
+ 10
+ );
+ if (zindex > highest) {
+ highest = zindex;
+ }
+ }
+
+
+
+ this.el.dom.style.zIndex = highest;
+