(function (){
var host=document.domain;
if(!host){
//本地网页不执行
return;}

if(document.getElementById('linkpans')){
//防止重复加载

}
else{

"use strict";
;

var pans= document.createElement('b');
pans.id='linkpans';
document.body.appendChild(pans);

var clearLink, excludedTags, linkFilter, linkMixInit, linkPack, linkify, observePage, observer, setLink, urlPrefixes, url_regexp, xPath;

url_regexp = /((https?:\/\/|www\.)[\x21-\x7e]+[\w\/]|(\w[\w._-]+\.(com|cn|org|net|info|tv|cc|gov|edu))(\/[\x21-\x7e]*[\w\/])?|ed2k:\/\/[\x21-\x7e]+\|\/|thunder:\/\/[\x21-\x7e]+=)/gi;

urlPrefixes = ['http://', 'https://', 'ftp://', 'thunder://', 'ed2k://'];

clearLink = function (event) {
var j, len, link, prefix, ref, ref1, url;
link = (ref = event.originalTarget) != null ? ref : event.target;
if (!(link != null && link.localName === "a" && ((ref1 = link.className) != null ? ref1.indexOf("textToLink") : void 0) !== -1)) {
return;
}
url = link.getAttribute("href");
//console.log url
for (j = 0, len = urlPrefixes.length; j < len; j++) {
prefix = urlPrefixes[j];
if (url.indexOf(prefix) === 0) {
return;
}
}
return link.setAttribute("href", "http://" + url);
};

document.addEventListener("mouseover", clearLink);

setLink = function (candidate) {
var ref, ref1, ref2, span, text;
if (candidate == null || ((ref = candidate.parentNode) != null ? (ref1 = ref.className) != null ? typeof ref1.indexOf === "function" ? ref1.indexOf("textToLink") : void 0 : void 0 : void 0) !== -1 || candidate.nodeName === "#cdata-section") {
return;
}
text = candidate.textContent.replace(url_regexp, '<a href="$1" target="_blank" class="textToLink">$1</a>');
if (((ref2 = candidate.textContent) != null ? ref2.length : void 0) === text.length) {
return;
}
span = document.createElement("span");
span.innerHTML = text;
return candidate.parentNode.replaceChild(span, candidate);
};

excludedTags = "a,svg,canvas,applet,input,button,area,pre,embed,frame,frameset,head,iframe,img,option,map,meta,noscript,object,script,style,textarea,code".split(",");

xPath = '//text()[not(ancestor::' + excludedTags.join(') and not(ancestor::') + ')]';

linkPack = function (result, start) {
var i, j, k, ref, ref1, ref2, ref3, startTime;
startTime = Date.now();
while (start + 10000 < result.snapshotLength) {
for (i = j = ref = start, ref1 = start + 10000; ref <= ref1 ? j <= ref1 : j >= ref1; i = ref <= ref1 ? ++j : --j) {
setLink(result.snapshotItem(i));
}
start += 10000;
if (Date.now() - startTime > 2500) {
return;
}
}
for (i = k = ref2 = start, ref3 = result.snapshotLength; ref2 <= ref3 ? k <= ref3 : k >= ref3; i = ref2 <= ref3 ? ++k : --k) {
setLink(result.snapshotItem(i));
}
};

linkify = function (node) {
var result;
result = document.evaluate(xPath, node, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
return linkPack(result, 0);
};

linkFilter = function (node) {
var j, len, tag;
for (j = 0, len = excludedTags.length; j < len; j++) {
tag = excludedTags[j];
if (tag === node.parentNode.localName.toLowerCase()) {
return NodeFilter.FILTER_REJECT;
}
}
return NodeFilter.FILTER_ACCEPT;
};

observePage = function (root) {
var tW;
tW = document.createTreeWalker(root, NodeFilter.SHOW_TEXT, { //+ NodeFilter.SHOW_ELEMENT,
acceptNode: linkFilter
}, false);
while (tW.nextNode()) {
setLink(tW.currentNode);
}
};

observer = new window.MutationObserver(function (mutations) {
var Node, j, k, len, len1, mutation, ref;
for (j = 0, len = mutations.length; j < len; j++) {
mutation = mutations[j];
if (mutation.type === "childList") {
ref = mutation.addedNodes;
for (k = 0, len1 = ref.length; k < len1; k++) {
Node = ref[k];
observePage(Node);
}
}
}
});

linkMixInit = function () {
if (window !== window.top || window.document.title === "") {
return;
}
//console.time('a')
linkify(document.body);
//console.timeEnd('a')
return observer.observe(document.body, {
childList: true,
subtree: true
});
};

setTimeout(linkMixInit, 100);
}


})();