[Let] IMGSCAN.JS + :hover

asiamoth — 2011-12-13T09:52:11Z
/*
 * @title IMGSCAN.JS + :hover
 * @description 画像へのリンクにサムネイルを付加・マウスを載せると原寸で表示
 * @include 
 * @license 
 * @require 
 */

/*
 *  IMGSCAN.JS - Copyright (C) 2011.6.20 AOK.
 *  http://homepage3.nifty.com/aokura/jscript/imgscan.html
 */
(function() {
  var b = /ime\.st\/|ime\.nu\/|pinktower\.com\/\?*|http:\/\/nun\.nu\/\?/g;
  var c = /.+\.(?:gif|jpg|png|jpeg|bmp)$/i;
  var d = /(^|[^a-z])(h?t)?(tps?:\/\/[!#-;=?-Z_a-z~]+)/gm;
  var x = /\x1f(https?:\/\/[!#-;=?-Z_a-z~]+)/gm;

  // add styles @asiamoth
  var styles = document.createElement('style');
  styles.type = 'text/css';
  styles.innerHTML = [ '.imgscan:hover{',
  'position: absolute !important;',
  'width: auto !important;',
  'height: auto !important; }'].join('');
  document.getElementsByTagName("head")[0].appendChild(styles);

  var urlscan = function(n) {
    if ((!n.parentNode || n.parentNode.tagName != 'A') && n.nodeType == 3) {
      n.nodeValue = n.nodeValue.replace(d, '$1\x1fht$3');
    }
    for (var i = 0; i < n.childNodes.length; i++) {
      urlscan(n.childNodes[i]);
    }
  };

  var imgscan = function(w) {
    var a = w.document.getElementsByTagName('A');
    for (var i = 0; i < a.length; i++) {
      if (c.test(a[i].href)) {
        var e = a[i].href.replace(b, '');
        a[i].href = e;
        a[i].target = '_blank';
        // add class @asiamoth
        a[i].innerHTML = '<img class="imgscan" src="' + e + '" width="75" height="75" />';
      }
    }
  };

  var framescan = function(w) {
    if (w.document) {
      var e = w.document.body;
      urlscan(e);
      e.innerHTML = e.innerHTML.replace(x,'<a href="$1" target="_blank">$1</a>');
      imgscan(w);
    }
    var f = w.frames;
    if (f) {
      for (var i = 0; i < f.length; i++) {
        try { framescan(f[i]); } catch(e) {}
      }
    }
  };

  framescan(window);

})();
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[Let] IMGSCAN.JS + :hover
