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Improve logsoku & 2ch for Smartphone

display image directly, add links that show a certain accout of floor

当前为 2015-09-12 提交的版本，查看 最新版本。

// ==UserScript==
// @name           Improve logsoku & 2ch for Smartphone
// @description    display image directly, add links that show a certain accout of floor
// @include        http://www.logsoku.com/*
// @include        http://sp.logsoku.com/*
// @include        http://*.2ch.*
// @author         yechenyin
// @version        0.82.9
// @namespace 	   https://gf.qytechs.cn/scripts/3497
// ==/UserScript==


/**************************以下参数可自定义修改**************************/

//图片显示默认缩放比例
var percent = 0.5;

//图片显示最大高度(像素）
var image_max_height = 420;

//图片显示最大宽度(像素）
var image_max_width = 600;

//图片显示最小高度(像素）
var image_min_height = 240;

//显示显示最小宽度(像素）
var image_min_width = 320;

//弹出图片的原图，要取消此功能请将true改为false
var popup_enable = true;

//点击图片后隐藏图片，要取消此功能请将true改为false
var click_to_hide_image = true;


//
var phone_thread_comments = 334;

//
var contain_floores = 250;

//
var pc_searched_links_contain_comments = 500;

//
var latest_floors = 150;

var block_floors_contain_blacklist_image = true;

var search_result_latest_floors = 15;

/****************************************************/
if (!localStorage)
  alert('This browser does not support localStorage!');
if (localStorage.last_read === undefined)
  localStorage.last_read = '';
if (localStorage.filter === undefined)
  localStorage.filter = '';
if (localStorage.blacklist_ids === undefined)
  localStorage.blacklist_ids = '';
if (localStorage.blacklist_images === undefined)
  localStorage.blacklist_images = '';

  localStorage.filter = '';
  localStorage.blacklist_images = '';

if (location.href.match("http://sp.logsoku.com/search")) {
  for (var i=0; i<$("a.search_thread_title").length; i++) {
      var thread = $("a.search_thread_title").eq(i);
      last_comment = thread.next().find(".res span").text().match(/\d+/)[0];
      var href = thread[0].href + "1-" + last_comment;
      var all_comments = $("<a>", {href:href});
      thread.next().find(".res span").wrap(all_comments);


      var time = thread.next().find(".date").text();
      time = time.replace(/\d{4}-/, "").replace(/:\d{2}\s/, " ");
      time = time.replace(/\d{4}-/, "").replace(/:\d{2}\s$/, " ");
      thread.next().find(".date").text(time);

  }


  get_last_read("a.search_thread_title");
  // openDB().onsuccess  = function(event){
  //   var db = event.target.result;
  //   var transaction = db.transaction(["read"],"readwrite");
  //   var store = transaction.objectStore("read");
  //
  //   for (var i=0; i<$("a.search_thread_title").length; i++) {
  //     (function(i) {
  //       var thread = $("a.search_thread_title").eq(i);
  //       var url = thread[0].href.replace("http://sp.logsoku.com", "");
  //       var request = store.get(url);
  //       request.onsuccess = function(event){
  //         if (event.target.result) {
  //           var start = event.target.result.last + 1;
  //           if (start >1000)
  //           start = 1001;
  //           var end = start + phone_thread_comments;
  //           thread[0].href = url + start + "-" + end;
  //         } else {
  //           thread[0].href = url + "1-" + phone_thread_comments;
  //         }
  //         console.log(i + ":" + thread[0].href);
  //       };
  //     })(i);
  //   }
  // };
}



jQuery.fn.loaded = function (action) {
    var target = this;
    if ($(this.selector).length > 0) {
        console.log($(this.selector).length + ' ' + this.selector + " is loaded");
        setTimeout(function() {action();}, 300);
    } else
        setTimeout(function() {target.loaded(action);}, 100);
};

if (location.href.indexOf("http://sp.logsoku.com/r/") === 0) {
  if (location.href[location.href.lastIndexOf("/")+1] != "l")
    var first = parseInt($(".thread_2ch>dd").eq(0).attr("id").replace("comment_", ""));
  else
    var first = parseInt($(".thread_2ch>dd").eq(1).attr("id").replace("comment_", ""));
  var last = parseInt($(".thread_2ch>dd").last().attr("id").replace("comment_", ""));
  if (last>1000)
    last = 1001;
  var amount = parseInt($(".navbar").prev().text().match(/^\d+/)[0]);
  if (amount > 1000)
    amount = 1000;

  $(".pagination li").remove();
  var href = location.href.substring(0,location.href.lastIndexOf("/")+1);

  var link = null;
  if (first - phone_thread_comments >= 1)
    link = $("<a>", {text:"<", href: href + (first-phone_thread_comments).toString() + "-" + (first-1).toString()});
  else if (first >= 1)
    link = $("<a>", {text:"<", href: href + "1" + "-" + (first-1).toString()});
  if (link)
    $(".pagination ul").append(link.wrap($("<li>")));

  for (var i = 0; i<amount/phone_thread_comments; i++) {
    link = $("<a>", {text:(i+1).toString(), href: href + (i*phone_thread_comments + 1).toString() + "-" + (i*phone_thread_comments + phone_thread_comments).toString()});
    $(".pagination ul").append(link.wrap($("<li>")));
  }

  var next_link = null;
  if (last + phone_thread_comments < amount)
    next_link = $("<a>", {text:">", href: href + (last + 1).toString() + "-" + (last + phone_thread_comments).toString()});
  else if (last + 1 <= amount)
    next_link = $("<a>", {text:">", href: href + (last + 1).toString() + "-" + amount});
  if (next_link)
    $(".pagination ul").append(next_link.wrap($("<li>")));

  var filter_menu = $("<li>", {class:"dropdown open filter"});
  var innerHTML = "<a href='#' class='dropdown-toggle'>过滤<b class='caret'></b></a>";
  innerHTML += "<ul class='dropdown-menu filter-menu' style='display:none'>";
  innerHTML += "<li id='all_comments'><a>全部</a></li><li class='divider'></li>";
  innerHTML += "<li id='all_comments_hide_images'><a>不显示图片</a></li><li class='divider'></li>";
  innerHTML += "<li id='only_reply_and_links'><a>只含回复及链接</a></li><li class='divider'></li>";
  innerHTML += "<li id='only_links_and_images'><a>只含链接及图片</a></li><li class='divider'></li>";
  innerHTML += "<li id='only_images'><a>只含图片</a></li> </ul>";
  filter_menu.html(innerHTML);
  filter_menu.insertBefore($("ul.nav>li:last-child").eq(0));

  $("li.filter>a").click(function() {
    $(this).next().toggle();
  });

  filter_comments();
  $("ul.filter-menu").on("click", "li", function (filter) {
    localStorage.filter = this.id;
    filter_comments();
  });


    record_last_read();
    get_last_read("dd>a[href^='/']");




  $(".thread dt br").remove();
  $(".thread dt .nem, dt>b").remove();
  $(".thread dt").append($("<span>", {text:"block this ID", click:blockId}));
  $(".thread dt").append("&nbsp;&nbsp;");
  $(".thread dt").append($("<span>", {text:"block images blow", click:blockImages}));
  $(".thread dt").each(function() {
    var id = $(this).find("a[class^='id']").text();
    if (localStorage.blacklist_ids && localStorage.blacklist_ids.indexOf(id)>0) {
      $(this).next().remove();
      $(this).remove();
    }
  });

  $(".thread dd>a").each(function() {
    if (this.href.indexOf("http://l.moapi.net/") === 0) {
      this.href = this.href.replace("http://l.moapi.net/", "");
        alert(this.href);

            if (this.href.match(/\.(jpg|jpeg|bmp|gif|png|JPG|JPEG|BMP|GIF|PNG)$/))
              alert('match');

                          if (localStorage.filter && localStorage.filter !== "all_comments_hide_images" && localStorage.blacklist_images && localStorage.blacklist_images.search(this.href)<0)
                            alert('this.href');

      if (this.href.match(/\.(jpg|jpeg|bmp|gif|png|JPG|JPEG|BMP|GIF|PNG)$/) && localStorage.filter != "all_comments_hide_images" && localStorage.blacklist_images.search(this.href)<0)
      $(this).replaceWith($("<img>", {src: this.href}));

      if (localStorage.blacklist_images && localStorage.blacklist_images.search(this.href) > 0) {
        if (block_floors_contain_blacklist_image) {
          $(this).parent().prev().hide();
          $(this).parent().hide();
        }
        else
          $(this).hide();
      }

    }
  });


  alert('load');
  $(".anchor_res>a").click(function() {
    $(this).parent().load(this.href + " .thread_2ch>dd");
    return false;
  });



  $("#thread-recommend-list-display a").loaded(function () {
    var recommend = $("#thread-recommend-list-display");
    var title = $('h1.title').eq(0).text();
    if (title.indexOf('★') > 0)
      common = title.substring(0, title.indexOf('★'));
    else if (title.indexOf('☆') > 0)
        common = title.substring(0, title.indexOf('★'));
    else {
    var title1 = recommend.find("a").eq(0).text();
    var title2 = recommend.find("a").eq(1).text();
    for (i=0; i<title1.length; i++)
    if (title2[i] != title1[i])
    break;
    common = title1.substring(0, i-1);
    }
    console.log('query:'+common);

    recommend.prepend($("<div>", {css:{display:"none"}}));
    recommend.children().first().load("http://sp.logsoku.com/search?q=" + common + " .search-list", function(){
      for (i=0; i<recommend.find("li a").length; i++) {
        recommend.find("li a")[i].href = $(".search-list .column>a")[i].href;
        recommend.find("li a")[i].textContent = $(".search-list .column>a")[i].textContent;
      }

      recommend.find("li").each(function() {
        if (location.href.match($(this).find("a")[0].href)) {
          $(this).css({'border':'2px solid #AFAE93', 'border-top':'1px solid #AFAE93'});
        }
      });

      get_last_read("#thread-recommend-list-display a");
      recommend.find("li a").each(function() {
        if (this.href.match(/\d+(?=-)/)[0] > 1000 ) {
          $(this).css({'color':'#8F8E7D'});
        }
      });

    });
  });

}



function get_last_read(links) {
  for (var i=0; i<$(links).length; i++) {
    var thread = $(links)[i];
    var url = thread.href.replace("http://sp.logsoku.com", "");
    var index = -1;
    if (localStorage.last_read)
      index = localStorage.last_read.indexOf(url);
    if (index > 0) {
      var last_read = parseInt(localStorage.last_read.substr(index-3, 3));
      if (last_read === 0)
      last_read = 1000;
      var start = last_read + 1;
      var end = start + phone_thread_comments;
      console.log(last_read+' is read last time for '+url);

      thread.href = url + start + "-" + end;
    } else {
      thread.href = url + "1-" + phone_thread_comments;
    }
    console.log(i + "::" + thread.href);
  }
}


  function record_last_read() {
    var url = location.href.replace("http://sp.logsoku.com", "");
    url = url.substring(0, url.lastIndexOf("/")+1);
    var last_read = $(".thread_2ch>dt strong").last().text();
    if (last_read.length == 1)
    last_read = '00' + last_read;
    if (last_read.length == 2)
    last_read = '0' + last_read;
    if (last_read.length == 4)
    last_read = '000';
    console.log(last_read + ' is read for' + url);

    var index = -1;
    if (localStorage.last_read)
       index = localStorage.last_read.indexOf(url);
    if (index < 0) {
      localStorage.last_read += last_read + url + "\n";
    } else {
      localStorage.last_read = localStorage.last_read.substring(0, index-4) + last_read + localStorage.last_read.substr(index);
    }
    console.log('last read:' + localStorage.last_read);

    //   openDB().onsuccess  = function(event){
    //     var db = event.target.result;
    //     var transaction = db.transaction(["read"],"readwrite");
    //     transaction.oncomplete = function(event) {
    //       console.log("Success");
    //     };
    //     transaction.onerror = function(event) {
    //       alert("Error");
    //     };
    //
    //
    //
    //     var store = transaction.objectStore("read");
    //     var request = store.get(url);
    //     request.onsuccess = function(event){
    //       if (!request.result) {
    //         console.log("Adding : "+ url + " : " + last_read);
    //         store.add({url: url, last: parseInt(last_read)});
    //       } else {
    //         console.log("Updating : "+event.target.result.last + " to " + last_read);
    //         request.result.last = parseInt(last_read);
    //         store.put(request.result);
    //       }
    //     };
    //
    //   };
    //
  }

  function openDB() {
    var indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
    if(!indexedDB)
    console.log("你的浏览器不支持IndexedDB");

    var request = indexedDB.open("2chDB", 1);
    var db;
    request.onerror = function(event){
      alert("打开DB失败" + event);
    };
    request.onupgradeneeded   = function(event){
      console.log("Upgrading");
      db = event.target.result;
      var objectStore = db.createObjectStore("read", { keyPath : "url" });
      objectStore.createIndex("last", "last", { unique: false });
    };
    return request;
  }

  function blockId() {
    var id = $(this).parent().find("a[class^='id']").text();
    localStorage.blacklist_ids += id + ",";

    $("dt").each(function() {
      var id = $(this).find("a[class^='id']").text();
      if (localStorage.blacklist_ids.indexOf(id)>0) {
        $(this).next().hide();
        $(this).hide();
      }
    });
  }

  function blockImages() {
    var images = $(this).parent().next().find("img");
    for (i=0; i<images.length; i++)
    localStorage.blacklist_images += images[i].src + " ";

    $("dt").each(function() {
      var images = $(this).next().find("img");
      for (i=0; i<images.length; i++) {
        if (localStorage.blacklist_images.search(images[i].src)>0) {

          if (block_floors_contain_blacklist_image) {
            $(this).next().hide();
            //$(this).hide();
            break;
          } else
          $(images[i]).hide();
        }
      }
    });
  }

  function filter_comments() {
    if (this.nodeName == "li" && this.id !== undefined)
    localStorage.filter = this.id;

    $("ul.filter-menu>li").each(function() {
      if (this.id == localStorage.filter)
      $(this).css("background", "#d8edff");
      else
      $(this).css("background", "#fff");
    });
    $("ul.filter-menu").hide();

    if (localStorage.filter == "all_comments") {
      $("dd[id^=comment]").each(function() {
        $(this).prev().show();
        $(this).show();
      });
    } else if (localStorage.filter == "only_reply_and_links") {
      $("dd[id^=comment]").each(function() {
        if ($(this).find("a, img").length === 0) {
          $(this).prev().hide();
          $(this).hide();
        } else {
          $(this).prev().show();
          $(this).show();
        }
      });
    } else if (localStorage.filter == "only_links_and_images") {
      $("dd[id^=comment]").each(function(index) {
        if ($(this).find("a[href^='http:'], img").length === 0 && index !== 0) {
          $(this).prev().hide();
          $(this).hide();
        } else {
          $(this).prev().show();
          $(this).show();
        }
      });

    } else if (localStorage.filter == "only_images") {
      $("dd[id^=comment]").each(function() {
        if ($(this).find("img").length === 0) {
          $(this).prev().hide();
          $(this).hide();
        } else {
          $(this).prev().show();
          $(this).show();
        }
      });
    }

  }

  function pc_filter_comments() {
    if (this.nodeName !== undefined && this.id !== undefined)
    localStorage.filter = this.id;

    $("ul.filter-menu>li").each(function() {
      if (this.id == localStorage.filter)
      this.css("background", "#d8edff");
      else
      this.css("background", "#fff");
    });
    $("ul.filter-menu").hide();

    if (localStorage.filter == "all_comments") {
      $("dd[id^=comment]").each(function() {
        $(this).prev().show();
        $(this).show();
      });
    } else if (localStorage.filter == "only_reply_and_links") {
      $("dd[id^=comment]").each(function() {
        if ($(this).find("a, img").length === 0) {
          $(this).prev().hide();
          $(this).hide();
        } else {
          $(this).prev().show();
          $(this).show();
        }
      });
    } else if (localStorage.filter == "only_links_and_images") {
      $("dd[id^=comment]").each(function() {
        if ($(this).find("a[href^='http:'], img").length === 0) {
          $(this).prev().hide();
          $(this).hide();
        } else {
          $(this).prev().show();
          $(this).show();
        }
      });

    } else if (localStorage.filter == "only_images") {
      $("dd[id^=comment]").each(function() {
        if ($(this).find("img").length === 0) {
          $(this).prev().hide();
          $(this).hide();
        } else {
          $(this).prev().show();
          $(this).show();
        }
      });
    }

  }

  if (location.href.match("http://www.logsoku.com/search")) {
    var results = document.getElementById("search_result_threads");
    if (results) {
      var titles = results.getElementsByClassName("title");

      for (i=0; i<titles.length; i++) {
        var link = titles[i].children[0];
        if (link)
        link.href = link.href + "l" + search_result_latest_floors;
      }
    }
  }


  if (location.href.match("http://www.logsoku.com/r/")) {
    $("div.comment").each(function() {
      if ($(this).find("a[href^='http://l.moapi.net/'], img").length === 0)
      $(this).parent().hide();
      else
      $(this).parent().show();
    });

    var links = document.links;
    for (j=0; j<links.length; j++) {
      links[j].href = links[j].href.replace("http://l.moapi.net/", "");

      if (links[j].innerHTML.match(/.\.(jpg|jpeg|gif|png|JPG|JPEG|GIF|PNG)$/)) {
        var img = document.createElement("img");
        if (links[j].innerHTML.match(/\w*:?\/\//))
        img.src = links[j].innerHTML.replace(/\w*:?\/\//, "http://");
        else
        img.src = "http://" + links[j].innerHTML;

        img.style.display = "none";
        img.onload = resize;
        if (click_to_hide_image)
        img.onclick = function() { this.style.display = "none";};
        if (popup_enable) {
          var container = document.createElement("div");
          container.style.display = "inline";
          container.onmouseover = function() { this.children[0].style.display = "inline";};
          container.onmouseout  = function() { this.children[0].style.display = "none";};
          container.appendChild(img);
        }
        links[j].parentNode.replaceChild(container, links[j]);
        j--;
      }

    }
    //pc_filter_comments();


    //    var filter_menu = $("<li>", {class:"dropdown open filter"});
    //    var innerHTML = "<a href='#' class='dropdown-toggle'>过滤<b class='caret'></b></a>";
    //    innerHTML += "<ul class='dropdown-menu filter-menu' style='display:none'>";
    //    innerHTML += "<li id='all_comments'><a>全部</a></li><li class='divider'></li>";
    //    innerHTML += "<li id='all_comments_hide_images'><a>不显示图片</a></li><li class='divider'></li>";
    //    innerHTML += "<li id='only_reply_and_links'><a>只含回复及链接</a></li><li class='divider'></li>";
    //    innerHTML += "<li id='only_links_and_images'><a>只含链接及图片</a></li><li class='divider'></li>";
    //    innerHTML += "<li id='only_images'><a>只含图片</a></li> </ul>";
    //    filter_menu.html(innerHTML);
    //    filter_menu.insertBefore($("ul.nav>li:last-child"));
    //    var filter_clicked = function (filter) {
    //	localStorage.filter = filter;
    //	filter_comments();
    //    }
    //
    //    $("li.filter>a").click(function() {
    //	$(this).next().toggle();
    //    });
    //
    //
    //    $("ul.filter-menu").on("click", "li", filter_comments);

    $(".thread-nav>div").append($("<div>", {class:"icheckbox_line-grey", text:"只打开图片", click:openImages, style:"width:120px"}));
    var nav = document.getElementsByClassName("thread-nav")[0].children[0];
    if (nav) {
      var base = nav.children[2].href;
      nav.children[3].href = base + "l" + latest_floors;

      for (i=0; i<1000/contain_floores; i++) {
        var link = document.createElement("a");
        var range = String(i*contain_floores+1) + "-" +  String((i+1)*contain_floores);
        link.href= base + range;
        link.innerHTML = range;
        link.className = "nav-btn";
        nav.appendChild(link);
      }
    }




    var hide_name = true;
    if (hide_name) {
      var names = document.querySelectorAll("span.nem, span.em");
      for (i=0; i<names.length; i++) {
        names[i].style.display = "none";
        names[i].nextSibling.replaceData(0, 3, "");
        colon_pos = names[i].previousSibling.text.indexOf(":");
        names[i].previousSibling.replaceData(colon_pos+1, 1, "");
      }
    }

    var comments = document.getElementsByClassName("comment");
    for (i=0; i<comments.length; i++) {
      var id = comments[i].previousSibling.previousSibling.text;
      if (localStorage.blacklist_ids.search(id) >= 0) {
        comments[i].parentNode.style.display = "none";
      }
      console.log(localStorage.blacklist_ids);


      var hide_id = document.createElement("span");
      hide_id.innerHTML = "&nbsp;(block this ID'comemnts)";
      hide_id.style.color = "#666";
      hide_id.style.cursor = "pointer";
      hide_id.onclick = function () {
        localStorage.blacklist_ids += id + " ";
        this.parentNode.style.display = "none";
      };
      comments[i].parentNode.insertBefore(hide_id, comments[i]);
    }


    var search_box = document.getElementsByClassName("top-search-box").parentNode;
    var black_list = document.createElement("li");
    var black_list_link = document.createElement("a");
    black_list_link.onclick = function () {
      this.previousSibling.style.display = "inline";
    };
    var black_list_text = document.createElement("span");
    black_list_text.innerHTML = "black list";
    black_list_link.appendChild(black_list_text);
    search_box.appendChild(black_list_link);


    // draw black list configuration board
    var black_list_configuration = document.createElement("div");
    black_list_configuration.style.textAlign = "center";
    var close = document.createElement("a");
    close.innerHTML = "&#10006;&times;";
    close.style.cssText = "float:right; padding:3px; border:1px #666 solid";
    close.onclick = function () {
      this.parentNode.style.display = "inline";
    };
    black_list_configuration.appendChild(close);

    var text = document.createElement("span");
    text.innerHTML = "IDs in the black list(seperate by space):";
    black_list_configuration.appendChild(text);
    var textarea = document.createElement("textarea");
    textarea.innerHTML = localStorage.blacklist_ids;
    textarea.id = "blacklist_ids";
    black_list_configuration.appendChild(textarea);

    var text = document.createElement("span");
    text.innerHTML = "Contents in the black list(seperate by new line):";
    black_list_configuration.appendChild(text);
    var textarea = document.createElement("textarea");
    textarea.innerHTML = localStorage.blacklist_contents;
    textarea.id = "blacklist_contents";
    black_list_configuration.appendChild(textarea);

    var close = document.createElement("a");
    close.innerHTML = "save";
    close.style.cssText = "padding:3px; border:1px #666 solid";
    close.onclick = function () {
      var input = document.getElementById("blacklist_ids");
      localStorage.blacklist_ids = input.nodeValue;
      input = document.getElementById("blacklist_contents");
      localStorage.blacklist_contents = input.nodeValue;
      this.parentNode.style.display = "none";
    };
    black_list_configuration.appendChild(close);

  }

  function resize() {
    var w = this.naturalWidth;
    var h = this.naturalHeight;
    var width = this.naturalWidth * percent;
    var height = this.naturalHeight * percent;

    height = height > image_max_height ? image_max_height : height;
    height = height < image_min_height ? image_min_height : height;
    width = height * w/h;


    width = width > image_max_width ? image_max_width : width;
    width = width < image_min_width ? image_min_width : width;
    height = width * h/w;

    height = height > image_max_height ? image_max_height : height;
    height = height < image_min_height ? image_min_height : height;
    width = height * w/h;

    this.width = width;
    this.height = height;
    this.style.display = "block";


    //insert popup image
    if (popup_enable) {
      var popup_img = document.createElement("img");
      width = w;
      height = h;
      var clientWidth = document.body.clientWidth;
      var clientHeight = document.body.clientHeight;


      if (height > clientHeight) {
        heigth = clientHeight;
        width = clientHeight * w/h;
      }
      if (width > clientWidth) {
        width = clientWidth;
        height = clientWidth * h/w;

        if (height > clientHeight) {
          heigth = clientHeight;
          width = clientHeight * w/h;
        }
      }
      popup_img.heigth = height;
      popup_img.width = width;

      popup_img.src = this.src;
      popup_img.style.zIndex = 2;
      popup_img.style.position = "fixed";
      popup_img.style.left = "0px";
      popup_img.style.top = "0px";
      popup_img.style.display = "none";
      //popup_img.onmouseout = function() { this.style.display = "none"};
      //var download = document.createElement("a");
      //download.setAttribute("download", "");
      //download.appendChild(popup_img);
      this.parentNode.insertBefore(popup_img, this);
      this.parentNode.heigth = height;
      this.parentNode.width = width;
    }

  }



  function openImages() {
    var images = "";
    for (var i=0; i<$(".comment img").length; i++) {
      images += "<img  style='width:inherit'  src='" + $(".comment img")[i].src + "'><br>";
    }
    var images_window = window.open("", "images", "width=240, height=100");
    var message = "<div unselectable='on' style='user-select:none' selectstart='return false;'>Please press Ctrl+A.<br>Then Press Ctrl+C.<br>Because browser not allow script to copy images to clipboard. </div>";
    images_window.document.write(images);
  }

  jQuery.fn.disableSelection = function() {
    return this.attr('unselectable', 'on').css('user-select', 'none').on('selectstart', false);
  };

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