https://www.soloaffitti.it/userfiles/modules/microweber/api/tools/elementedit.js

1mw.tools.elementEdit = function (el, textonly, callback, fieldClass) {
2    if (!el || el.querySelector('.mw-live-edit-input') !== null) {
3        return;
4    }
5    textonly = (typeof textonly === 'undefined') ? true : textonly;
6    var input = mwd.createElement('span');
7    input.className = (fieldClass || "") + ' mw-live-edit-input mw-liveedit-field';
8    input.contentEditable = true;
9    var $input = $(input);
10    if (textonly === true) {
11        input.innerHTML = el.textContent;
12        input.onblur = function () {
13            var val = $input.text();
14            var ischanged = true;
15            setTimeout(function () {
16                mw.$(el).text(val);
17                if (typeof callback === 'function' && ischanged) {
18                    callback.call(val, el);
19                }
20            }, 3);
21        };
22        input.onkeydown = function (e) {
23            if (e.keyCode === 13) {
24                e.preventDefault();
25                mw.$(el).text($input.text());
26                if (typeof callback === 'function') {
27                    callback.call($input.text(), el);
28                }
29                return false;
30            }
31        }
32    }
33    else {
34        input.innerHTML = el.innerHTML;
35        input.onblur = function () {
36            var val = this.innerHTML;
37            var ischanged = this.changed === true;
38            setTimeout(function () {
39                el.innerHTML = val;
40                if (typeof callback === 'function' && ischanged) {
41                    callback.call(val, el);
42                }
43            }, 3)
44        }
45        input.onkeydown = function (e) {
46            if (e.keyCode === 13) {
47                e.preventDefault();
48                var val = this.innerHTML;
49                el.innerHTML = val;
50                if (typeof callback === 'function') {
51                    callback.call(val, el);
52                }
53                return false;
54            }
55        }
56    }
57    mw.$(el).empty().append(input);
58    $input.focus();
59    input.changed = false;
60    $input.change(function () {
61        this.changed = true;
62    });
63    return input;
64}