dw txt adder

// ==UserScript==
// @name         tmp txt adder
// @namespace    http://pastebin.com/0smkg67S
// @version      1.0
// @description  hopefully does a thing
// @author       icie
// @match        *.dreamwidth.org/*
// @grant        none
// ==/UserScript==

(
    function(){
        function addJQuery(callback) {
            var script = document.createElement("script");
            script.setAttribute("src", "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js");
            script.addEventListener('load', function() {
                var script = document.createElement("script");
                script.textContent = "window.$=jQuery.noConflict(true);(" + callback.toString() + ")();";
                document.body.appendChild(script);
            }, false);
            document.body.appendChild(script);
        }

        function main(){

            var codemap = {};
            codemap.txt = {"start":'<span style="font-family:courier new, monospace">',
                           "end":"</span>"
                          };
            codemap.action = {"start":'<small>[',
                              "end":"]</small>"
                             };
            codemap.italic = {"start":'<em>',
                              "end":"</em>"
                             };
            codemap.mdash = {"start":'&mdash;',
                              "end":""
                             };
            codemap.bold = {"start":'<strong>',
                              "end":"</strong>"
                             };

            var count = 0;

            function addText(e) {
                var id = e.currentTarget.id;
                var code = codemap[$("#"+id).text()];
                var sStartTag = code.start;
                var sEndTag = code.end;
                var bDouble = true,
                    oMsgInput = $('[name="body"]:first')[0],
                    nSelStart = oMsgInput.selectionStart,
                    nSelEnd = oMsgInput.selectionEnd,
                    sOldText = oMsgInput.value;
                oMsgInput.value = sOldText.substring(0, nSelStart) + (bDouble ? sStartTag + sOldText.substring(nSelStart, nSelEnd) + sEndTag : sStartTag) + sOldText.substring(nSelEnd);
                oMsgInput.setSelectionRange(bDouble || nSelStart === nSelEnd ? nSelStart + sStartTag.length : nSelStart, (bDouble ? nSelEnd : nSelStart) + sStartTag.length);
                oMsgInput.focus();
            }
            for (var key in codemap){
                var value = codemap[key];
                $('#subject').after($('<button></button>').prop('id',key+'btn').prop('type','button').text(key).click(addText));
            };

            onkeydown = function(e){
                if(e.ctrlKey && (e.keyCode == 'I'.charCodeAt(0) || e.keyCode == 'i'.charCodeAt(0))){
                    e.preventDefault();
                    $("#italicbtn").click();
                    return false;
                }
                if(e.ctrlKey && (e.keyCode == 'b'.charCodeAt(0) || e.keyCode == 'B'.charCodeAt(0))){
                    e.preventDefault();
                    $("#boldbtn").click();
                    return false;
                }
                if(e.ctrlKey && (e.keyCode == 'l'.charCodeAt(0) || e.keyCode == 'L'.charCodeAt(0))){
                    e.preventDefault();
                    $("#actionbtn").click();
                    return false;
                }
            }
        }
        if (window.jQuery) {

            //   console.log("jq loaded");
            main();
        } else {

            //   console.log("jq not loaded");
            addJQuery(main);
        }

    }
)();
//addJQuery(main);