Add a toolbar icon to an Umbraco page

ToolbarButton.cs

using System;
using System.Linq;
using System.Web;
using System.Web.UI;
using umbraco.BusinessLogic;
using umbraco.presentation.LiveEditing;
using umbraco.presentation.masterpages;
using umbraco.uicontrols;

namespace YourApp 
{
    public class PageEvents : ApplicationBase
    {

        public PageEvents()
        {
            umbracoPage.Load += umbracoPage_Init;
        }

        void umbracoPage_Init(object sender, EventArgs e)
        {
            var umbPage = sender as umbracoPage;

            if (umbPage == null)
                return;

            var path = umbPage.Page.Request.Path.ToLower();

            if (!path.Contains("someumbracopage.aspx"))
                return;

            AddToolbarButton(umbPage);
        }

        private void AddToolbarButton(umbracoPage page)
        {
            int pageId;
            int.TryParse(HttpContext.Current.Request.QueryString["id"], out pageId);

            var menu = (ScrollingMenu)Utility.FindControl<Control>((Control c) => c.ClientID.EndsWith("_menu"), page.Page);
            if (menu == null)
            {
                var tabView = (TabView)Utility.FindControl<Control>((Control c) => c.ID == "TabView1", page.Page);

                foreach (TabPage page3 in tabView.GetPanels())
                {
                    AddSomeMenuIcon(page3.Menu, page, pageId);
                }
            }
            else
            {
                AddSomeMenuIcon(menu, page, pageId);
            }

            // Optional: Register some dirty JS/CSS to fix styling issues
            string s = "<script type='text/javascript'>";
            s += "$(document).ready(function() {";
            s += @"$('.editorIcon[alt]').each(
            function() { 
                if ($(this).attr('alt').indexOf('Icon Title') != -1) {
                    $(this).css('padding-bottom', '4px').css('cursor', 'pointer'); } });";
            s += "});";
            s += "</script>";
            page.Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "jsfixpadding", s);

            string strCss = "<style type='text/css'>.mceToolbarExternal{padding-left: 15px;}</style>";
            page.Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "cssfixtoolbar", strCss);
        }

        private void AddSomeMenuIcon(ScrollingMenu menu, umbracoPage page, int pageId)
        {
            MenuIconI ni = menu.NewIcon();
            ni.AltText = "Icon Title";
            ni.OnClickCommand = "UmbClientMgr.openModalWindow('some-page.aspx', 'Modal Title', true, 600, 500, 0, 0); return false;";
            ni.ImageURL = "/umbraco/images/umbraco/some-icon.png");
        }
    }
}