function initMenu() { 'use strict'; var toggle = document.getElementById("navbar-toggle"), menu = document.getElementById("navbar"); toggle.addEventListener('click', function (event) { menu.classList.toggle("in"); }); } document.addEventListener("DOMContentLoaded", function(event) { initMenu(); }); // http://stackoverflow.com/a/34003331 if (Element.prototype.scrollIntoView && !Element.prototype.scrollIntoViewIfNeeded) { Element.prototype.scrollIntoViewIfNeeded = function (centerIfNeeded) { function withinBounds(value, min, max, extent) { if (false === centerIfNeeded || max <= value + extent && value <= min + extent) { return Math.min(max, Math.max(min, value)); } else { return (min + max) / 2; } } function makeArea(left, top, width, height) { return { "left": left, "top": top, "width": width, "height": height , "right": left + width, "bottom": top + height , "translate": function (x, y) { return makeArea(x + left, y + top, width, height); } , "relativeFromTo": function (lhs, rhs) { var newLeft = left, newTop = top; lhs = lhs.offsetParent; rhs = rhs.offsetParent; if (lhs === rhs) { return area; } for (; lhs; lhs = lhs.offsetParent) { newLeft += lhs.offsetLeft + lhs.clientLeft; newTop += lhs.offsetTop + lhs.clientTop; } for (; rhs; rhs = rhs.offsetParent) { newLeft -= rhs.offsetLeft + rhs.clientLeft; newTop -= rhs.offsetTop + rhs.clientTop; } return makeArea(newLeft, newTop, width, height); } }; } var parent, elem = this, area = makeArea( this.offsetLeft, this.offsetTop, this.offsetWidth, this.offsetHeight); while ((parent = elem.parentNode) instanceof HTMLElement) { var clientLeft = parent.offsetLeft + parent.clientLeft; var clientTop = parent.offsetTop + parent.clientTop; // Make area relative to parent's client area. area = area. relativeFromTo(elem, parent). translate(-clientLeft, -clientTop); parent.scrollLeft = withinBounds( parent.scrollLeft, area.right - parent.clientWidth, area.left, parent.clientWidth); parent.scrollTop = withinBounds( parent.scrollTop, area.bottom - parent.clientHeight, area.top, parent.clientHeight); // Determine actual scroll amount by reading back scroll properties. area = area.translate(clientLeft - parent.scrollLeft, clientTop - parent.scrollTop); elem = parent; } }; } function chooseDlc(e, name) { var e1 = document.getElementsByClassName('about-' + name)[0]; var ec = e.control; var checked = ec ? ec.checked : null; window.setTimeout(function() { if (e1 && e1.scrollIntoViewIfNeeded) { e1.scrollIntoViewIfNeeded(false); } if (checked) { ec.checked = false; } if (ec) ec.blur(); }, 0); return true; }