il resto della pagina (HTML) non è molto rilevante...
questo, invece, è il JavaScript esterno che attiva la funzione:
Codice PHP:
var indicator_img_path = "indicator.gif";
function init_ibox() {
var elem_wrapper = "ibox";
createIbox(document.getElementsByTagName("body")[0]);
var docRoot = document.getElementsByTagName("a");
var ibAttr = "rel";
var e;
for (var i = 0; i < docRoot.length - 1; i++) {
e = docRoot[i];
if(e.getAttribute(ibAttr)) {
var t = e.getAttribute(ibAttr);
if ((t.indexOf("ibox") != -1) || t.toLowerCase() == "ibox") {
e.onclick = function() {
var t = this.getAttribute(ibAttr);
var params = parseQuery(t.substr(5,999));
var url = this.href;
if(this.target != "") {url = this.target}
var title = this.title;
showBG();
showIbox(url,title,params);
return false;
};
}
}
}
}
var box_w_visible = false;
showBG = function() {
var box_w = getElem('ibox_w');
var opacity_level = 8;
box_w_visible = false;
box_w.style.opacity = 0;
box_w.style.filter = 'alpha(opacity=0)';
for (var i=0;i<=opacity_level;i++) {setTimeout('setOpacity('+i+')',70*i);}
setOpacity = function (value) {
var box_w = getElem('ibox_w');
box_w.style.opacity = value/10;
box_w.style.filter = 'alpha(opacity=' + value*10 + ')';
if (value == opacity_level) {box_w_visible = true;}
}
box_w.style.display = "";
var pagesize = new getPageSize();
var scrollPos = new getScrollPos();
var ua = navigator.userAgent;
if(ua.indexOf("MSIE ") != -1) {box_w.style.width = pagesize.width+'px';}
else {box_w.style.width = pagesize.width+'px';}
//box_w.style.height = document.body.scrollHeight+50+'px';
box_w.style.height = pagesize.height+scrollPos.scrollY+'px';
}
hideBG = function() {
var box_w = getElem('ibox_w');
box_w.style.display = "none";bg_opacity = 0;box_w_visible = false;
}
showIndicator = function() {
var ibox_p = getElem('ibox_progress');
ibox_p.style.display = "";
posToCenter(ibox_p);
ibox_p.onclick = function() {hideIbox();hideIndicator();}
}
hideIndicator = function() {
var ibox_p = getElem('ibox_progress');
ibox_p.style.display = "none";
ibox_p.onclick = null;
}
createIbox = function(elem) {
var strHTML = "<div id=\"ibox_w\" style=\"display:none;\"></div>";
strHTML += "<div id=\"ibox_progress\" style=\"display:none;\"><img src=\""+indicator_img_path+"\" alt=\"Loading...\"";
strHTML += "style=\"width:128px;height:128px;\"/></div>";
strHTML += "<div id=\"ibox_wrapper\" style=\"display:none\">";
strHTML += "<div id=\"ibox_content\"></div>";
strHTML += "<div id=\"ibox_footer_wrapper\"><div id=\"ibox_close\" style=\"float:right;\">";
strHTML += "<a id=\"ibox_close_a\" href=\"javascript:void(null);\" >[b]<font color=\"#ffffff\">Close Win</font>[/b]</a></div>";
strHTML += "<div id=\"ibox_footer\"></div></div></div></div>";
var docBody = document.getElementsByTagName("body")[0];
docBody.style.overflowY = "auto";
var ibox = document.createElement("div");
ibox.setAttribute("id","ibox");
ibox.innerHTML = strHTML;
elem.appendChild(ibox);
}
var ibox_w_height = 0;
showIbox = function(url,title,params) {
var ibox = getElem('ibox_wrapper');
var ibox_type = 0;
var ibox_footer = getElem('ibox_footer');
if(title != "") {ibox_footer.innerHTML = title;} else {ibox_footer.innerHTML = "";}
var urlString = /\.jpg|\.jpeg|\.png|\.gif|\.html|\.htm|\.php|\.cfm|\.asp|\.aspx|\.jsp|\.jst|\.rb|\.txt/g;
var urlType = url.match(urlString);
if(urlType == '.jpg' || urlType == '.jpeg' || urlType == '.png' || urlType == '.gif'){
ibox_type = 0;
showIndicator();
var imgPreloader = new Image();
imgPreloader.onload = function(){
var pagesize = new getPageSize();
var x = pagesize.width - 100;
var y = pagesize.height - 100;
if(imgPreloader.width > x) {
imgPreloader.height = imgPreloader.height * (x/imgPreloader.width);
imgPreloader.width = x;
if(imgPreloader.height > y) {
imgPreloader.width = imgPreloader.width * (y/imgPreloader.height);
imgPreloader.height = y;
}
}
else if(imgPreloader.height > y) {
imgPreloader.width = imgPreloader.width * (y/imgPreloader.height);
imgPreloader.height = y;
if(imgPreloader.width > x) {
imgPreloader.height = imgPreloader.height * (x/imgPreloader.width);
imgPreloader.width = x;
}
}
hideIndicator();
var strHTML = "<a href=\"javascript:void(null);\"><img src=\""+url+"\" style=\"width:"+imgPreloader.width+"px;height:"+imgPreloader.height+"px;border:0;\"/></a>";
setIBoxContent(strHTML);
ibox.style.height = imgPreloader.height+'px';
ibox.style.width = imgPreloader.width+'px';
ibox.style.display = "";
ibox.style.visibility = "hidden";
posToCenter(ibox);
ibox.style.visibility = "visible";
}
imgPreloader.src = url;
} else if(url.indexOf("#") > 0) {
var strHTML = "";
ibox_type = 1;
var elemSrcId = url.substr(url.indexOf("#") + 1,1000);
var elemSrc = getElem(elemSrcId);
if(elemSrc) {
strHTML = elemSrc.innerHTML;
}
setIBoxContent(strHTML);
if(params['height']) {ibox.style.height = params['height']+'px';}
else {ibox.style.height = '280px';}
if(params['width']) {ibox.style.width = params['width']+'px';}
else {ibox.style.width = '450px';}
ibox.style.display = "";
ibox.style.visibility = "hidden";
posToCenter(ibox);
ibox.style.visibility = "visible";
}else if(urlType=='.htm'||urlType=='.html'||urlType=='.php'||
urlType=='.asp'||urlType=='.aspx'||urlType=='.jsp'||
urlType=='.jst'||urlType=='.rb'||urlType=='.txt'||
urlType=='.cfm') {
ibox_type = 2;
showIndicator();
http.open('get',url,true);
http.onreadystatechange = function() {
if(http.readyState == 4){
var response = http.responseText;
setIBoxContent(response);
hideIndicator();
if(params['height']) {ibox.style.height = params['height']+'px';}
else {ibox.style.height = '280px';}
if(params['width']) {ibox.style.width = params['width']+'px';}
else {ibox.style.width = '450px';}
ibox.style.display = "";
ibox.style.visibility = "hidden";
posToCenter(ibox);
ibox.style.visibility = "visible";
}
}
http.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
http.send(null);
}
ibox.style.opacity = 0;
ibox.style.filter = 'alpha(opacity=0)';
var ibox_op_level = 10;
for (var i=0;i<=ibox_op_level;i++) {setTimeout('setIboxOpacity('+i+')',30*i);}
setIboxOpacity = function (value) {
var ibox = getElem('ibox_wrapper');
ibox.style.opacity = value/10;
ibox.style.filter = 'alpha(opacity=' + value*10 + ')';
}
if(ibox_type == 1 || ibox_type == 2) {
ibox.onclick = null;
getElem("ibox_close_a").onclick = function() {hideIbox();}
} else {
ibox.onclick = hideIbox;
getElem("ibox_close_a").onclick = null;
}
window.onscroll = maintPos;
}
maintPos = function() {
var ibox = getElem('ibox_wrapper');
var box_w = getElem('ibox_w');
var pagesize = new getPageSize();
var ua = navigator.userAgent;
if(ua.indexOf("MSIE ") != -1) {box_w.style.width = pagesize.width+'px';}
else {box_w.style.width = pagesize.width+'px';}
box_w.style.height = document.body.scrollHeight+'px';
posToCenter(ibox);
}
hideIbox = function() {
hideBG();
var ibox = getElem('ibox_wrapper');
ibox.style.display = "none";
clearIboxContent();
window.onscroll = null;
}
posToCenter = function(elem) {
var scrollPos = new getScrollPos();
var pageSize = new getPageSize();
var emSize = new getElementSize(elem);
var x = Math.round(pageSize.width/2) - (emSize.width /2) + scrollPos.scrollX;
var y = Math.round(pageSize.height/2) - (emSize.height /2) + scrollPos.scrollY;
elem.style.left = x+'px';elem.style.top = y+'px';
}
getScrollPos = function() {
var docElem = document.documentElement;
this.scrollX = self.pageXOffset || (docElem&&docElem.scrollLeft) || document.body.scrollLeft;
this.scrollY = self.pageYOffset || (docElem&&docElem.scrollTop) || document.body.scrollTop;
}
getPageSize = function() {
var docElem = document.documentElement
this.width = self.innerWidth || (docElem&&docElem.clientWidth) || document.body.clientWidth;
this.height = self.innerHeight || (docElem&&docElem.clientHeight) || document.body.clientHeight;
}
getElementSize = function(elem) {
this.width = elem.offsetWidth || elem.style.pixelWidth;
this.height = elem.offsetHeight || elem.style.pixelHeight;
}
setIBoxContent = function(str) {
clearIboxContent();
getElem('ibox_content').innerHTML = str;
}
clearIboxContent = function() {
getElem('ibox_content').innerHTML = "";
}
getElem = function(elemId) {
return document.getElementById(elemId);
}
parseQuery = function(query) {
var Params = new Object ();
if (!query) return Params;
var Pairs = query.split(/[;&]/);
for ( var i = 0; i < Pairs.length; i++ ) {
var KeyVal = Pairs[i].split('=');
if ( ! KeyVal || KeyVal.length != 2 ) continue;
var key = unescape( KeyVal[0] );
var val = unescape( KeyVal[1] );
val = val.replace(/\+/g, ' ');
Params[key] = val;
}
return Params;
}
createRequestObject = function() {
var xmlhttp;
if (!xmlhttp && typeof XMLHttpRequest != "undefined") {
try {xmlhttp = new XMLHttpRequest();} catch (e) {xmlhttp = false;}
}
return xmlhttp;
}
var http = createRequestObject();
function addEvent(obj, evType, fn){
if (obj.addEventListener){
obj.addEventListener(evType, fn, false);
return true;
} else if (obj.attachEvent){
var r = obj.attachEvent("on"+evType, fn);
return r;
} else {
return false;
}
}
addEvent(window, 'load', init_ibox);
Spero serva a capire.