Remove preview button in Umbraco

RemovePreviewButton.cs

using System;
using umbraco.BusinessLogic;
using umbraco.presentation.masterpages;

namespace SomeCompanyName.EventHandlers
{
    public class RemovePreviewButton : ApplicationBase
    {
        public RemovePreviewButton()
        {
            umbracoPage.Load += umbracoPage_Load;
        }

        void umbracoPage_Load(object sender, EventArgs e)
        {
            var umbracoPage = (umbracoPage)sender;
            var path = umbracoPage.Page.Request.Path.ToLower().Replace((umbraco.GlobalSettings.Path + "/").ToLower(), "");
            if (path != "editcontent.aspx") return;

            var script = @"<script type=""text/javascript"">
					$(document).ready(function () {
                        $('img[title=Preview]').remove()
					});
					</script>";

            umbracoPage.Page.ClientScript.RegisterClientScriptBlock(umbracoPage.GetType(), "RemovePreviewButton", script, false);
        }
    }
}

Can i change the link on the preview button to preview the parent node instead of the current node?