https://theprojectjunkie.com/plugins/content/verysimpleimagegallery/files/vsig.js

1// "Very Simple Image Gallery" Plugin for Joomla 3.1 - Version 1.6.8
2// License: GNU General Public License version 2 or later; see LICENSE.txt
3// Author: Andreas Berger - [email protected]
4// Copyright (C) 2013 Andreas Berger - http://www.bretteleben.de. All rights reserved.
5// Project page and Demo at http://www.bretteleben.de
6// ***Last update: 2013-08-15***
7
8//dom
9function vsig_dom(obj) {return document.getElementById(obj); }
10
11//switch image without reload
12function switchimg(t_ident, t_ident_b) {
13	//topimage
14	var topimg = "topimg" + t_ident_b[2];
15	t_ident[6] = t_ident[6].replace(/'/g, "'"); //replace ' with ' in alt-title
16	t_ident[4] = t_ident[4].replace(/'/g, "'"); //replace ' with ' in link-title
17	t_ident[6] = t_ident[6].replace(/&/g, "&"); //replace & with & in alt-title
18	//switch caption
19	var t_cap = (typeof (vsig_dom(topimg).parentNode.href) !== "undefined") ? (vsig_dom(topimg).parentNode.parentNode.getElementsByTagName("div")) : (vsig_dom(topimg).parentNode.getElementsByTagName("div"));
20	if (t_cap.length >= 1) {
21		t_cap[0].innerHTML = (t_ident[1] !== "" || t_ident[2] !== "") ? ("<span>" + t_ident[1] + "</span><span>" + t_ident[2] + "</span>") : "";
22	}
23	//switch link
24	if (typeof (vsig_dom(topimg).parentNode.href) !== "undefined") {
25		vsig_dom(topimg).parentNode.href = t_ident[3];
26		vsig_dom(topimg).parentNode.title = t_ident[4];
27		vsig_dom(topimg).parentNode.target = t_ident[5];
28	}
29	//switch image
30	vsig_dom(topimg).src = t_ident_b[0] + "vsig_images/" + t_ident[0];
31	vsig_dom(topimg).alt = t_ident[6];
32	vsig_dom(topimg).title = t_ident[6];
33}
34
35//switch set
36function switchset(s_ident, s_start, s_number) {
37	var ev_ident = window[s_ident];
38	var ev_identb = window[s_ident + "_b"];
39	var sets_total = Math.ceil(ev_ident.length / s_number);
40	var sets_current = s_start / s_number + 1;
41	//button back
42	if (sets_current >= 2) {
43		vsig_dom('bback' + s_ident).href = ev_identb[3].replace(/&amp;/g, "&") + parseInt(s_start - s_number, 10);
44		vsig_dom('bback' + s_ident).onclick = function () {switchset(s_ident, parseInt(s_start - s_number, 10), s_number); return false; };
45	} else {
46		vsig_dom('bback' + s_ident).href = ev_identb[3].replace(/&amp;/g, "&") + ((sets_total - 1) * s_number);
47		vsig_dom('bback' + s_ident).onclick = function () {switchset(s_ident, ((sets_total - 1) * s_number), s_number); return false; };
48	}
49	//button forward
50	if (sets_current <= sets_total - 1) {
51		vsig_dom('bfwd' + s_ident).href = ev_identb[3].replace(/&amp;/g, "&") + parseInt(s_start + s_number, 10);
52		vsig_dom('bfwd' + s_ident).onclick = function () {switchset(s_ident, parseInt(s_start + s_number, 10), s_number); return false; };
53	} else {
54		vsig_dom('bfwd' + s_ident).href = ev_identb[3].replace(/&amp;/g, "&") + parseInt(0, 10);
55		vsig_dom('bfwd' + s_ident).onclick = function () {switchset(s_ident, parseInt(0, 10), s_number); return false; };
56	}
57	//set counter
58	vsig_dom('counter' + s_ident).innerHTML = "&nbsp;" + sets_current + "/" + sets_total;
59	//switch main image
60	if (s_start <= ev_ident.length && s_start >= 0) {
61		switchimg(ev_ident[s_start], ev_identb);
62	}
63	if (s_number >= 2) {
64		//thumb ändern
65		var a;
66		for (a = 1; a <= s_number; a++) {
67			if (ev_ident[s_start + a - 1]) {
68				var b = parseInt(s_start + a - 1, 10);
69				var obj = vsig_dom('thb' + s_ident + '_' + a);
70				obj.style.visibility = "visible";
71				obj.getElementsByTagName("img")[0].src = ev_identb[0] + ev_identb[1] + ev_ident[b][7];
72				obj.getElementsByTagName("img")[0].alt = ev_ident[b][6];
73				obj.getElementsByTagName("a")[0].title = ev_ident[b][6];
74				obj.getElementsByTagName("a")[0].href = ev_identb[3].replace(/&amp;/g, "&") + b;
75				obj.getElementsByTagName("a")[0].b = b;
76				obj.getElementsByTagName("a")[0].onclick = function () {switchimg(ev_ident[this.b], ev_identb); return false; };
77				if (obj.getElementsByTagName("a")[0].onmouseover) {
78					obj.getElementsByTagName("a")[0].onmouseover = function () {switchimg(ev_ident[this.b], ev_identb); return false; };
79				}
80			} else {
81				vsig_dom('thb' + s_ident + '_' + a).style.visibility = "hidden";
82			}
83		}
84	}
85}
86
87//daisychain preload
88function vsig_daisychain(s_ident, s_identb) {
89	var sl = function () {
90		var ev_ident = window[s_ident];
91		var ev_identb = window[s_identb];
92		var img_total = ev_ident.length;
93		var c;
94		var prld_img;
95		var prld_imges = [];
96		var prld_thbs = [];
97		for (c = 0; c < img_total; c++) {
98			prld_img = new Image();
99			prld_img.src = ev_identb[0] + "vsig_images/" + ev_ident[c][0];
100			prld_imges.push(prld_img);
101			prld_img.src = ev_identb[0] + "vsig_thumbs/" + ev_ident[c][7];
102			prld_thbs.push(prld_img);
103		}
104	};
105	if (window.addEventListener) {
106		window.addEventListener('load', sl, false);
107	} else if (window.attachEvent) {
108		window.attachEvent('onload', sl);
109	} else {
110		if (window.onload) {
111			var ld = window.onload;
112			window.onload = function () {ld(); sl(); };
113		} else {
114			window.onload = sl;
115		}
116	}
117}