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2019-01-17 - add support for error handlers + bugFix on multiple inclusion of filled script tag fix issues #15 and #17\n   *            - 2016-08-22 - remove global eval and fix issue #13\n   *            - 2014-06-26 - bugfix in css loaded check when hashbang is used\n   *            - 2014-05-25 - fallback support rewrite + null id bug correction + minification work\n   *            - 2014-05-21 - add cdn fallback support with hashbang url\n   *            - 2014-05-22 - add support for relative paths for stylesheets in checkLoaded\n   *            - 2014-05-21 - add support for relative paths for scripts in checkLoaded\n   *            - 2013-01-25 - add parrallel loading inside single load call\n   *            - 2012-06-29 - some minifier optimisations\n   *            - 2012-04-20 - now sharp part of url will be used as tag id\n   *                         - add options for checking already loaded scripts at load time\n   *            - 2012-04-19 - add addAliases method\n   * @note coding style is implied by the target usage of this script not my habbits\n   */\n  var isA = function (a, b) {\n      return a instanceof (b || Array);\n    },\n    //-- some minifier optimisation\n    D = document,\n    getElementsByTagName = 'getElementsByTagName',\n    length = 'length',\n    readyState = 'readyState',\n    onreadystatechange = 'onreadystatechange',\n    typeJS = 'text/javascript',\n    scriptStr = 'script',\n    header = D[getElementsByTagName]('head')[0] || D.documentElement,\n    aliases = {},\n    //-- get the current script tag for further evaluation of it's eventual content\n    scripts = D[getElementsByTagName](scriptStr),\n    scriptTag = scripts[scripts[length] - 1],\n    script = scriptTag.innerHTML.replace(/^\\s+|\\s+$/g, ''),\n    appendElmt = function (type, attrs, cb) {\n      var e = D.createElement(type),\n        i;\n      if (cb) {\n        //-- this is not intended to be used for link\n        if (e[readyState]) {\n          e[onreadystatechange] = function () {\n            if (e[readyState] === 'loaded' || e[readyState] === 'complete') {\n              e[onreadystatechange] = null;\n              cb();\n            }\n          };\n        } else {\n          e.onload = cb;\n        }\n      }\n      for (i in attrs) {\n        attrs[i] && (e[i] = attrs[i]);\n      }\n      header.appendChild(e);\n      // return e; // unused at this time so drop it\n    };\n  //avoid multiple inclusion to override current loader but allow tag content evaluation\n  if (!window.ljs) {\n    var checkLoaded = scriptTag.src.match(/checkLoaded/) ? 1 : 0,\n      //-- keep trace of header as we will make multiple access to it\n      urlParse = function (url) {\n        var parts = {}; // u => url, i => id, f = fallback\n        parts.u = url.replace(/#(=)?([^#]*)?/g, function (m, a, b) {\n          parts[a ? 'f' : 'i'] = b;\n          return '';\n        });\n        return parts;\n      },\n      load = function (loader, url, cb) {\n        if (aliases && aliases[url]) {\n          var args = aliases[url].slice(0);\n          isA(args) || (args = [args]);\n          cb && args.push(cb);\n          return loader.load.apply(loader, args);\n        }\n        if (isA(url)) {\n          // parallelized request\n          for (var l = url[length]; l--; ) {\n            loader.load(url[l]);\n          }\n          cb && url.push(cb); // relaunch the dependancie queue\n          return loader.load.apply(loader, url);\n        }\n        if (url.match(/\\.css\\b/)) {\n          return loader.loadcss(url, cb);\n        }\n        return loader.loadjs(url, cb);\n      },\n      loaded = {}, // will handle already loaded urls\n      errorHandlers = [],\n      loader = {\n        aliases: aliases,\n        loadjs: function (url, cb) {\n          var parts = urlParse(url);\n          var onError = function (url) {\n            for (var i = 0, l = errorHandlers.length; i < l; i++) {\n              errorHandlers[i](url);\n            }\n          };\n          url = parts.u;\n          if (loaded[url] === true) {\n            // already loaded exec cb if any\n            cb && cb();\n            return loader;\n          } else if (loaded[url] !== undefined) {\n            // already asked for loading we append callback if any else return\n            if (cb) {\n              loaded[url] = (function (ocb, cb) {\n                return function () {\n                  ocb && ocb();\n                  cb && cb();\n                };\n              })(loaded[url], cb);\n            }\n            return loader;\n          }\n          // first time we ask this script\n          loaded[url] = (function (cb) {\n            return function () {\n              loaded[url] = true;\n              cb && cb();\n            };\n          })(cb);\n          cb = function () {\n            loaded[url]();\n          };\n\n          appendElmt(\n            scriptStr,\n            {\n              type: typeJS,\n              src: url,\n              id: parts.i,\n              onerror: function (error) {\n                onError(url);\n                var c = error.currentTarget;\n                c.parentNode.removeChild(c);\n                appendElmt(\n                  scriptStr,\n                  {\n                    type: typeJS,\n                    src: parts.f,\n                    id: parts.i,\n                    onerror: function () {\n                      onError(parts.f);\n                    },\n                  },\n                  cb\n                );\n              },\n            },\n            cb\n          );\n          return loader;\n        },\n        loadcss: function (url, cb) {\n          var parts = urlParse(url);\n          url = parts.u;\n          loaded[url] ||\n            appendElmt('link', {\n              type: 'text/css',\n              rel: 'stylesheet',\n              href: url,\n              id: parts.i,\n            });\n          loaded[url] = true;\n          cb && cb();\n          return loader;\n        },\n        load: function () {\n          var argv = arguments,\n            argc = argv[length];\n          if (argc === 1 && isA(argv[0], Function)) {\n            argv[0]();\n            return loader;\n          }\n          load(\n            loader,\n            argv[0],\n            argc <= 1\n              ? undefined\n              : function () {\n                  loader.load.apply(loader, [].slice.call(argv, 1));\n                }\n          );\n          return loader;\n        },\n        addAliases: function (_aliases) {\n          for (var i in _aliases) {\n            aliases[i] = isA(_aliases[i]) ? _aliases[i].slice(0) : _aliases[i];\n          }\n          return loader;\n        },\n        onError: function (cb) {\n          errorHandlers.push(cb);\n          return loader;\n        },\n      };\n    if (checkLoaded) {\n      var i, l, links, url;\n      for (i = 0, l = scripts[length]; i < l; i++) {\n        (url = scripts[i].getAttribute('src')) &&\n          (loaded[url.replace(/#.*$/, '')] = true);\n      }\n      links = D[getElementsByTagName]('link');\n      for (i = 0, l = links[length]; i < l; i++) {\n        (links[i].rel === 'stylesheet' || links[i].type === 'text/css') &&\n          (loaded[links[i].getAttribute('href').replace(/#.*$/, '')] = true);\n      }\n    }\n    //export ljs\n    window.ljs = loader;\n    // eval inside tag code if any\n  }\n  // eval script tag content if needed\n  scriptTag.src && script && appendElmt(scriptStr, { innerHTML: script });\n})(window);\n"]}