var org = {p3k: ({url:"http://content.nejm.org/rss/current.xml", xml:"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n<head>\n    <title>MMS: Error</title>\n    <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"/>\n    <meta name=\"MSSmartTagsPreventParsing\" content=\"true\"/>\n    <meta name=\"robots\" content=\"noarchive,noindex,nofollow\"/>\n    <link href=\"/templates/jsp/_style2/style.css\" rel=\"stylesheet\" type=\"text/css\"/>\n    <link href=\"/templates/jsp/_style2/_mms/style.css\" rel=\"stylesheet\" type=\"text/css\"/>\n</head>\n\n<body>\n<div id=\"pageWrapper\">\n    <div id=\"header\">\n        <div id=\"logoWrapper\">\n            <a href=\"http://www.massmed.org\" class=\"external\" target=\"corporate\">\n                <img class=\"logo\" src=\"/templates/jsp/_style2/_mms/images/logo.gif\" alt=\"Massachusetts Medical Society\" border=\"0\" />\n            </a>\n        </div>\n    </div>\n    <div id=\"bodyWrapper\" style=\"padding: 1em; border-bottom: 1px solid #aaa\">\n        <h1>An error occurred setting your user cookie</h1>\n\n        <p> A cookie is a small amount of information that a web site copies onto your hard drive.\n            MMS uses cookies to improve performance by remembering that you are logged in when you go\n            from page to page. If the cookie cannot be set correctly, then MMS cannot determine whether\n            you are logged in and a new session will be created for each page you visit. This slows\n            the system down. Therefore, you must accept the MMS cookie to use the system. </p>\n\n        <h3>What Gets Stored in a Cookie?</h3>\n\n        <p>MMS only stores a session ID in the cookie, no other information is captured.</p>\n\n        <p> In general, only the information that you provide, or the choices you make while\n            visiting a web site, can be stored in a cookie. For example, the site cannot determine\n            your email name unless you choose to type it. Allowing a web site to create a cookie\n            does not give that or any other site access to the rest of your computer, and only the\n            site that created the cookie can read it. </p>\n\n        <p> Please read our <a href=\"/page/privacy\">privacy policy</a> for more\n            information about data collected on this site. </p>\n\n        <h3>Setting your browser to accept cookies</h3>\n\n        <p> There are many reasons why a cookie could not be set correctly. Below are the most common reasons: </p>\n\n        <ul>\n            <li>You have cookie notification switched on in your browser and you did\n                not accept the cookie set request. To remedy this, hit your browser's <strong>Back</strong>\n                button and try again, accepting the cookie this time.\n            </li>\n\n            <li>You have cookies disabled in your browser. You need to reset your browser to accept\n                cookies or to ask you if you want to accept cookies. For information on cookies and Netscape\n                Navigator you can go to the <a href=\"http://help.netscape.com/kb/consumer/970226-2.html\">\n                Netscape cookie page</a>. For Internet Explorer, go to\n                <a href=\"http://www.microsoft.com/info/cookies.htm\">information about cookies</a> from Microsoft.\n            </li>\n\n            <li>Your browser does not support cookies. See whether your browser\n                <a href=\"http://www.cookiecentral.com/test_cookie.htm\">accepts cookies</a>.\n            </li>\n\n            <li>Very Important: Check the date on your computer. If your\n                computer's clock shows a date before 1 Jan 1970 then the browser will\n                automatically forget the cookie. To fix this, simply set the correct\n                time and date on your computer.\n            </li>\n\n            <li>You have installed an application that monitors/blocks cookies from\n                being set. To remedy this, please disable the application while logging in or check with\n                your system administrator.\n            </li>\n        </ul>\n\n        <p> Go to <a href=\"http://www.cookiecentral.com/\">Cookie Central</a> for more information about cookies. </p>\n    </div>\n\n\n  <div id=\"copyrightFooter\">\n    &copy; 2008 Massachusetts Medical Society.\n  </div>\n</div>\n</body>\n</html>\n", message:undefined, modified:(new Date(1283438496839)), baseUri:"http://p3k.org/rss/", query:"frameColor=black&textColor=black&_=1208608861671&titleBarColor=lightblue&compact=&fontFace=&align=&showXmlButton=true&maxItems=7&boxFillColor=white&undefined=&titleBarTextColor=black&width=400&url=http://content.nejm.org/rss/current.xml&", param:{textColor:"black", width:"400", align:"", fontFace:"", url:"http://content.nejm.org/rss/current.xml", compact:"", frameColor:"black", showXmlButton:"true", undefined:"", boxFillColor:"white", _:"1208608861671", titleBarColor:"lightblue", maxItems:"7", titleBarTextColor:"black"}, box:"<table class=\"rssBox\" width=\"${width}\" bgcolor=\"${frameColor}\" \n      style=\"table-layout: fixed; overflow: hidden; font-family: ${fontFace};\" \n      align=\"${align}\" cellspacing=\"1\" cellpadding=\"7\" border=\"0\">\n<tr bgcolor=\"${titleBarColor}\">\n<td>\n   ${xmlButton}\n   <strong>${title}</strong>\n   <div>\n      <small style=\"color: ${titleBarTextColor};\">${date}</small>\n   </div>\n</td>\n</tr>\n<tr bgcolor=\"${boxFillColor}\">\n<td class=\"rssBoxContent\" style=\"color: ${textColor};\">\n   ${image}\n   ${items}\n   ${input}\n   <div class=\"rssBoxPromo\" style=\"margin-top: 0px; text-align: left; \n         font: 9px verdana, sans-serif\">\n      RSS box by <a href=\"http://p3k.org/rss\">p3k.org</a>.\n   </div>\n</td>\n</tr>\n</table>\n\n", image:"<a href=\"${link}\"><img src=\"${source}\" width=\"${width}\" height=\"${height}\" \nalt=\"${title}\" title=\"${title}\" align=\"${align}\" valign=\"${valign}\" \nhspace=\"${hspace}\" vspace=\"${vspace}\" border=\"0\" /></a>\n\n", input:"<form method=\"get\" action=\"${link}\">\n${description}\n<input type=\"text\" name=\"${name}\" size=\"15\" /> <input type=\"submit\" \nvalue=\"${title}\" />\n</form>\n\n", item:"<div class=\"rssBoxItemContent\">\n${title}\n${break}\n${description}\n${buttons}\n</div><br />\n\n", date:"${year}-${month}-${day}, ${hours}:${minutes}h\n\n", link:"<a class=\"${class}\" href=\"${link}\" style=\"${style}\">${text}</a>\n", error:"<?xml version=\"1.0\"?>\n<rss version=\"error\">\n   <channel>\n      <title>RSS Box Error</title>\n      <link>${link}</link>\n      <description>This output was automatically generated to report an error \n      that occurred during a request to the JavaScript RSS Box Viewer.</description>\n      <item>\n         <title>Oops, something went wrong...</title>\n         <description>An error occurred while processing the request to the \n         JavaScript RSS Box Viewer.</description>\n      </item>\n      <item>\n         <title>An error message was returned by the server.</title>\n         <description>${message}</description>\n      </item>\n      <item>\n         <description>Most likely, this might have happened because of a \n         non-existent or invalid RSS feed URL. Please check and possibly correct \n         your input, then try again.</description>\n      </item>\n   </channel>\n</rss>\n\n"})};
function debug(str) {
   return document.write('<p><span style="background-color: yellow;">', 
         str, '</span><p>');
}

org.p3k.RssBox = function() {
   var ref;
   var ISOPATTERN = /([0-9]{4})-([0-9]{2})-([0-9]{2})T([0-9:]+).*$/;
   
   var data = org.p3k;
   data.defaults = {
      url: "http://blog.p3k.org/rss",
      maxItems: 7,
      width: 200,
      align: "",
      frameColor: "black",
      titleBarColor: "lightblue",
      titleBarTextColor: "black",
      boxFillColor: "white",
      textColor: "black",
      showXmlButton: "",
      compact: ""
   };
   
   var baseUri = data.baseUri;
    
   var getColor = function(str) {
      if (str.length === 6 && parseInt(str, 16) && str.indexOf("#") !== 0) {
         str = "#" + str;
      }
      return str.toLowerCase();
   }

   var value;
   for (var i in data.defaults) {
      value = data.param[i];
      if (!value || value.length === 0) {
         data.param[i] = data.defaults[i];
      } else if (i.indexOf("Color") > 0) {
         data.param[i] = getColor(value);
      }
   }

   // FIXME: Ugly work-around for many boxes using too small width 
   // values because the former version did not show the exact output.
   if (data.param.javascript && data.param.width < 200) {
      data.param.width = 200;
   }
   // Remove obsolete parameters from param and query
   delete data.param.javascript;
   data.query = data.query.replace("javascript=true", "");   

   var NAMESPACES = {
      dc: "http://purl.org/dc/elements/1.1/",
      rdf: "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   };

   var getUrl = function(url) {
      url = baseUri + "proxy.r?" + encodeURIComponent(url);
   
      var HttpRequest = function() {
         return (typeof XMLHttpRequest !== "undefined") ?
            new XMLHttpRequest() : new ActiveXObject("Msxml2.XMLHTTP");
      }
   
      var request = new HttpRequest();
      request.open("GET", url, false);
      request.send(null);   
      if (!request.getResponseHeader("Date")) {
         var cached = request;
         var ifModifiedSince = cached.getResponseHeader("Last-Modified") || 
               new Date(0); // January 1, 1970
         request = new HttpRequest();
         request.open("GET", url, false);
         request.setRequestHeader("If-Modified-Since", ifModifiedSince);
         request.send("");
         if (request.status === 304) {
            request = cached; 
         }
      }
      return request;
   }
   
   var getDocument = function(source) {
      if (source) {
         if (document.implementation.createDocument) {
            var parser = new DOMParser();
            var doc = parser.parseFromString(source, "text/xml");
            return doc;
         } else if (window.ActiveXObject) {
            var doc = new ActiveXObject("Microsoft.XMLDOM");
            doc.async = "false";
            doc.loadXML(source);
            return doc;
         }
      }
      return null;
   }
   
   var getError = function() {
      var msg = null, root;
      if (!xml || data.message) {
         msg = data.message || "Unknown error.";
      } else if (xml.parseError && xml.parseError.errorCode) {
         msg = xml.parseError.reason; // IExplore
      } else if (root = xml.documentElement) {
         var errorNode;
         if (root.nodeName === "parsererror") {
            msg = xml.documentElement.textContent; // Mozilla
         } else if ((errorNode = root.childNodes[0]) && 
               errorNode.nodeName === "parsererror") {
            msg = errorNode.textContent; // Safari
         } else if (!/rss|rdf|scriptingNews/i.test(xml.documentElement.nodeName)) {
            msg = "Incompatible data format. Are you sure this is an RSS feed?";
         }
      }
      return msg;
   }
   
   var getNode = function(parent, name, namespace) {
      if (namespace) {
         if (typeof parent.getElementsByTagNameNS === "undefined") {
            var elements = parent.getElementsByTagName(namespace + ":" + name);
         } else {
            var elements = parent.getElementsByTagNameNS(NAMESPACES[namespace], name);
         }
      } else {
         var elements = parent.getElementsByTagName(name);
      }
      if (elements && elements[0]) {
         return elements[0];
      }
      return null;
   }
   
   var getText = function(node) {
      if (node && node.childNodes && node.childNodes.length > 0) {
         return node.childNodes[0].nodeValue || "";
      }
      return "";
   }
   
   var trim = function(str) {
      if (str) {
         return str.replace(/^\s*(\S*)\s*$/, "$1");
      }
      return "";
   }
   
   var padZero = function(n) {
      if (n < 10) {
         return "0" + n
      }
      return n;
   }

   var encodeXml = function(str) {
      if (!str) {
         return "";
      }
      return str.replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/&/g, "&amp;");
   }
      
   var render = function(template, param) {
      if (!template || !param) {
         return template;
      }
      template = template.replace(/\$\{([^}]+)\}/g, function() {
         var key = arguments[1];
         return param[key] || "";
      });
      return template;
   }
   
   var renderDate = function(date) {
      if (date.constructor !== Date) {
         var str = String(date);
         var millis = Date.parse(str.replace(ISOPATTERN, "$1/$2/$3 $4"));
         if (millis) {
            date = new Date(millis);
         } else {
            date = new Date;
         }
      }

      return render(data.date, {
         year: date.getFullYear(),
         month: padZero(date.getMonth() + 1),
         day: padZero(date.getDate()),
         hours: padZero(date.getHours()),
         minutes: padZero(date.getMinutes()),
         seconds: padZero(date.getSeconds()),
         timeZone: "" // date.getTimezoneOffset()
      });
   }
   
   var renderButtons = function(enclosure, source) {
      var result = "";
      if (enclosure && enclosure.link) {
         result += render(data.image, {
            source: baseUri + "enclosure.gif",
            title: enclosure.type,
            link: encodeURI(enclosure.link),
            width: 13,
            height: 16
         });
      }
      if (source && source.link) {
         result += render(data.image, {
            source: baseUri + "source.gif",
            title: source.title,
            link: encodeURI(source.link),
            width: 15,
            height: 15
         });
      }
      return result;         
   }
   
   var param = data.param;
   var rss = data.rss = {items: []};
   var xml = getDocument(data.xml);

   rss.error = getError();
   if (rss.error !== null) {
      xml = getDocument(render(data.error, {
         link: baseUri + "?" + encodeXml(data.query),
         message: encodeXml(rss.error)
      }));
      param.compact = 0;
      param.showXmlButton = 1;
   }

   var root = xml.documentElement;
   var type = root.nodeName;

   if (type === "scriptingNews") {
      var channel = getNode(xml, "header");
      rss.format = "Scripting News";
      rss.version = getText(getNode(channel, "scriptingNewsVersion"));
      rss.title = getText(getNode(channel, "channelTitle"));
      rss.description = getText(getNode(channel, "channelDescription"));
      rss.link = getText(getNode(channel, "channelLink"));
      if (ref = getText(getNode(channel, "imageUrl"))) {
         ref = rss.image = {source: ref};
         ref.title = getText(getNode(channel, "imageTitle"));
         ref.link = getText(getNode(channel, "imageLink"));
         ref.width = getText(getNode(channel, "imageWidth"));
         ref.height = getText(getNode(channel, "imageHeight"));
         ref.description = getText(getNode(channel, "imageCaption"));
      }
   } else {
      var channel = getNode(xml, "channel");
      rss.format = "RSS";
      rss.version = (type === "rdf:RDF") ? "1.0" : 
            root.getAttribute("version");
      rss.title = getText(getNode(channel, "title"));
      rss.description = getText(getNode(channel, "description"));
      rss.link = getText(getNode(channel, "link"));
      var image = getNode(xml, "image");
      if (image) {
         ref = rss.image = {};
         ref.source = getText(getNode(image, "url"));
         ref.title = getText(getNode(image, "title"));
         ref.link = getText(getNode(image, "link"));
         ref.width = getText(getNode(image, "width"));
         ref.height = getText(getNode(image, "height"));
         ref.description = getText(getNode(image, "description"));
      }
   }
   
   if (type === "rdf:RDF") {
      rss.date = renderDate(getText(getNode(channel, "date", "dc")) || data.modified);
      rss.rights = getText(getNode(channel, "creator", "dc"));
      var input = getNode(root, "textinput");
      if (input && !getNode(input, "link")) {
         input = root.getElementsByTagName("textinput")[1];
      }
      if (input) {
         ref = rss.input = {};
         ref.link = getText(getNode(input, "link"));
         ref.description = getText(getNode(input, "description"));
         ref.name = getText(getNode(input, "name"));
         ref.title = getText(getNode(input, "title"));
      }
   } else {
      rss.date = renderDate(getText(getNode(channel, "lastBuildDate") || getText(getNode(channel, "pubDate"))) || data.modified);
      rss.rights = getText(getNode(channel, "copyright"));
   }
   
   var item, text, node;
   var items = xml.getElementsByTagName("item");

   for (var i=0; i<Math.min(items.length, param.maxItems); i+=1) {
      item = items[i];

      if (type === "scriptingNews") {
         ref = {title: ""};
         ref.description = getText(getNode(item, "text")).replace(/\n/g, " ");
         ref.link = getText(getNode(item, "link"));
         if (text = trim(getText(getNode(item, "linetext")).replace(/\n/g, " "))) {
            ref.description = ref.description.replace(new RegExp(text), 
                  '<a href="' + getText(getNode(item, "url")) + '">' + text + '</a>');
         }
      } else {
         ref = {
            title: getText(getNode(item, "title")),
            description: getText(getNode(item, "description")),
            link: getText(getNode(item, "link") || getNode(item, "guid"))
         };
     }

     if (node = getNode(item, "source")) {
        ref.source = {
           link: node.getAttribute("url"),
           title: getText(node)
        }
     }
     
     if (node = getNode(item, "enclosure")) {
        ref.enclosure = {
           link: node.getAttribute("url"),
           length: node.getAttribute("length"),
           type: node.getAttribute("type")
        }
     }
     
     if (node = getNode(item, "category")) {
        ref.category = {
           domain: node.getAttribute("domain") || "",
           content: getText(node)
        }
     }
     
     rss.items.push(ref);
   }
   
   var item, items = "";
   for (var i=0; i<rss.items.length; i+=1) {
      item = rss.items[i];
      items += render(data.item, {
         title: new function() {
            var title = (!param.compact ? "<strong>" : "");
            if (item.link) {
               title += render(data.link, {
                  link: encodeURI(item.link),
                  text: item.title,
                  'class': "rssBoxItemTitle"
               });
            } else {
               title += item.title;
            }
            !param.compact && (title += "</strong>");
            return new String(title); // FIXME: Funny, title alone will be rendered as [object]
         }(),
         'break': item.title && item.description ? "<br />" : "",
         description: (!param.compact || !item.title) && item.description,
         buttons: renderButtons(item.enclosure, item.source)
      });
   }
   
   var box = render(data.box, {
      title: rss.link ? render(data.link, {
         link: encodeURI(rss.link),
         text: rss.title,
         'class': "rssBoxTitle",
         style: "color: " + param.titleBarTextColor
      }) : rss.title,
      description: rss.description,
      items: items,

      xmlButton: param.showXmlButton && render(data.image, {
         link: param.url,
         source: baseUri + "rss.png",
         title: rss.format + " " + rss.version,
         width: 16,
         height: 16,
         align: "right",
         hspace: 3
      }),
      
      image: !param.compact && rss.image && render(data.image, {
         link: encodeURI(rss.image.link),
         source: rss.image.source,
         width: rss.image.width,
         height: rss.image.height,
         title: rss.image.title,
         align: "right",
         valign: "baseline",
         hspace: 5,
         vspace: 5
      }),
      
      input: !param.compact && rss.input && render(data.input, {
         link: encodeURI(rss.input.link),
         description: rss.input.description,
         name: rss.input.name,
         title: rss.input.title
      }),
      
      date: rss.date,
      width: param.width,
      frameColor: param.frameColor,
      fontFace: param.fontFace,
      align: param.align,
      titleBarColor: param.titleBarColor,
      titleBarTextColor: param.titleBarTextColor,
      boxFillColor: param.boxFillColor,
      textColor: param.textColor
   });

   if (!window.rssBoxSetup) {
      document.write(box);
   }
   
   return box;
};

org.p3k.RssBox();

