var hashListener = {
ie: /MSIE/.test(navigator.userAgent),
hash: document.location.hash,
check: function () {
var h = document.location.hash;
if (h != this.hash) {
this.hash = h;
var title = this.onHashChanged();
}
},
checkIE: function () {
var h = document.location.hash;
if (h != this.hash) setHash(h);
},
init: function () {
if (this.ie) {
var frame = document.createElement("iframe");
frame.id = "state-frame";
frame.style.display = "none";
document.body.appendChild(frame);
}
var self = this;
if ("onpropertychange" in document && "attachEvent" in document) {
document.attachEvent("onpropertychange", function () {
if (event.propertyName == "location") {
self.check();
}
});
window.setInterval(function () { self.checkIE() }, 200);
}
else
window.setInterval(function () { self.check() }, 200);
},
setHash: function (h) {
if (this.ie) this.writeFrame(h);
else document.location.href = "#" + h;
},
getHash: function () {
return document.location.hash.substring(1);
},
writeFrame: function (h) {
var f = document.getElementById("state-frame");
var d = f.contentDocument || f.contentWindow.document;
d.open();
d.write("" + this.getTitle() + "