javascript bookmarklet to edit cookies on a page

_.js

(function (w, d) {
  var id = (new Date()).valueOf(),
      itemTemplate = "<label>" 
                   + "<code>{name}=</code>" 
                   + "<input id='Cookie{name}{index}{id}' type='text' value='{value}' style='font-family:monospace;width:50%' />" 
                   + "</label>" 
                   + "<input type='button' value='Update' onclick='window.UpdateCookie{id}(\"{name}\", {index});' />" 
                   + "<input type='button' value='Delete' onclick='window.DeleteCookie{id}(\"{name}\");' />" 
                   + "<br/>",
      formatTemplate = function (name, value, index) {
        name = name.replace(/'/, '&apos;');
        value = value.replace(/'/, '&apos;');
        return itemTemplate.replace(/\{id\}/gi, id)
                           .replace(/\{name\}/gi, name)
                           .replace(/\{value\}/gi, value)
                           .replace(/\{index\}/gi, index);
      },
      saveCookie = function (name, value) {
        // if path or domain or expires are needed, just append to value before calling
        d.cookie = name + "=" + value;
      },
      div = d.createElement("div"),
      body = d.getElementsByTagName("body")[0],
      outputHTML = "",
      y = new Date(),
      e = "",
      domain = "; domain=",
      p = "; path=",
    
      // set domains
      ds = d.domain.split("."),
      domainTLD = ds[ds.length - 1],
      domainString = domainTLD,
      domainArray = ["", domainTLD],
      
      // set paths
      ps = w.location.pathname.split("/"),
      pathString = "",
      pathArray = ["", "/"],
      
      i = 0, l = 0;

  y.setDate(y.getDate() - 1);
  e = "; expires=" + y.toGMTString();
  
  for (i = ds.length - 1; i--;) {
    domainString = ds[i] + "." + domainString;
    domainArray.push(domainString);
  }
  
  for (i = 1, l = ps.length; i < l; i++) {
    pathString += "/" + ps[i];
    pathArray.push(pathString);
  }
  
  w["SaveCookie" + id] = function (name, value) {
    saveCookie(w.encodeURIComponent(name), value);
    w.alert("Saved.\n" + name + "=" + value + "\n\n" + d.cookie);
  };
  
  w["UpdateCookie" + id] = function (name, index) {
    var newValue = d.getElementById("Cookie" + name + index + id).value;
    saveCookie(name, newValue);
    w.alert("Updated.\n" + name + "=" + newValue + "\n\n" + d.cookie);
  };
  
  w["DeleteCookie" + id] = function (name) {
    // try to remove it using different methods and variations etc:
    var originalLength = d.cookie.length;
    
    for (i = 0, l = domainArray.length; i < l; i++) {
      for (var j = 0, m = pathArray.length; j < m; j++) {
        var value = e + 
            ((domainArray[i] !== "") ? domain + domainArray[i] : "") + 
            ((pathArray[j] !== "") ? p + pathArray[j] : "");
        saveCookie(name, value);
      }
    }
    
    w.alert( ((d.cookie.length < originalLength) ? "Deleted! :-)" : "Not Deleted! :-(") + "\n" + name + "\n\n" + d.cookie);
  };
  
  if (d.cookie && d.cookie !== '') {
    var split = d.cookie.split(';');
    for (i = 0, l = split.length; i < l; i++) {
      var pair = split[i].split("="),
          name = pair[0].replace(/^\s+/, ''),
          value= w.decodeURIComponent(split[i].substring(pair[0].length + 1));

      outputHTML += formatTemplate(name, value, i);
    }
  }
  
  // add new cookie fields: 
  outputHTML += "<input id='CookieNewName" + id + "' type='text' value='' placeholder='name' style='font-family:monospace;width:25%' />" 
              + "=" 
              + "<input id='CookieNewValue" + id + "' type='text' value='' placeholder='value' style='font-family:monospace;width:50%' />" 
              + "<input type='button' value='Add' onclick='window[\"SaveCookie" + id + "\"](document.getElementById(\"CookieNewName" + id + "\").value, document.getElementById(\"CookieNewValue" + id + "\").value);' />";
  
  div.innerHTML = outputHTML;
  body.appendChild(div);

})(window, window.document);

bookmarklet.js

javascript:(function(a,b){var%20c=(new%20Date).valueOf(),d="<label><code>{name}=</code><input%20id='Cookie{name}{index}{id}'%20type='text'%20value='{value}'%20style='font-family:monospace;width:50%'%20/></label><input%20type='button'%20value='Update'%20onclick='window.UpdateCookie{id}(\"{name}\",%20{index});'%20/><input%20type='button'%20value='Delete'%20onclick='window.DeleteCookie{id}(\"{name}\");'%20/><br/>",e=function(a,b,e){return%20a=a.replace(/'/,"&apos;"),b=b.replace(/'/,"&apos;"),d.replace(/\{id\}/gi,c).replace(/\{name\}/gi,a).replace(/\{value\}/gi,b).replace(/\{index\}/gi,e)},f=function(a,c){b.cookie=a+"="+c},g=b.createElement("div"),h=b.getElementsByTagName("body")[0],i="",j=new%20Date,k="",l=";%20domain=",m=";%20path=",n=b.domain.split("."),o=n[n.length-1],p=o,q=["",o],r=a.location.pathname.split("/"),s="",t=["","/"],u=0,v=0;j.setDate(j.getDate()-1),k=";%20expires="+j.toGMTString();for(u=n.length-1;u--;)p=n[u]+"."+p,q.push(p);for(u=1,v=r.length;u<v;u++)s+="/"+r[u],t.push(s);a["SaveCookie"+c]=function(c,d){f(a.encodeURIComponent(c),d),a.alert("Saved.\n"+c+"="+d+"\n\n"+b.cookie)},a["UpdateCookie"+c]=function(d,e){var%20g=b.getElementById("Cookie"+d+e+c).value;f(d,g),a.alert("Updated.\n"+d+"="+g+"\n\n"+b.cookie)},a["DeleteCookie"+c]=function(c){var%20d=b.cookie.length;for(u=0,v=q.length;u<v;u++)for(var%20e=0,g=t.length;e<g;e++){var%20h=k+(q[u]!==""?l+q[u]:"")+(t[e]!==""?m+t[e]:"");f(c,h)}a.alert((b.cookie.length<d?"Deleted!%20:-)":"Not%20Deleted!%20:-(")+"\n"+c+"\n\n"+b.cookie)};if(b.cookie&&b.cookie!==""){var%20w=b.cookie.split(";");for(u=0,v=w.length;u<v;u++){var%20x=w[u].split("="),y=x[0].replace(/^\s+/,""),z=a.decodeURIComponent(w[u].substring(x[0].length+1));i+=e(y,z,u)}}i+="<input%20id='CookieNewName"+c+"'%20type='text'%20value=''%20placeholder='name'%20style='font-family:monospace;width:25%'%20/>=<input%20id='CookieNewValue"+c+"'%20type='text'%20value=''%20placeholder='value'%20style='font-family:monospace;width:50%'%20/><input%20type='button'%20value='Add'%20onclick='window[\"SaveCookie"+c+'"](document.getElementById("CookieNewName'+c+'").value,%20document.getElementById("CookieNewValue'+c+"\").value);'%20/>",g.innerHTML=i,h.appendChild(g)})(window,window.document);