I have following setup for tiny MCE. As you can see in image it shows a third row of buttons . I dont know where it comes from ! There is no setting in my javascript code for a third row still it shows that there.
tinyMCE.init({
mode : "textareas",
theme : "advanced",
plugins : "pagebreak,style,layer,table,save,advhr,advimage,advlink,emotions,iespell,inlinepopups,insertdatetime,preview,media,searchreplace,print,contextmenu,paste,directionality,fullscreen,noneditable,nonbreaking,xhtmlxtras,template,advlist,fullpage",
theme_advanced_buttons1 : "formatselect,fontselect,fontsizeselect,|,bold,italic,underline,strikethrough,|,justifyleft,justifycenter,justifyright,justifyfull,|,bullist,numlist,|,outdent,indent,|,forecolor,backcolor",
theme_advanced_buttons2 : "mybutton,|,link,unlink,|,hr,removeformat,pastetext,pasteword,cleanup,|,undo,redo,|,code",
theme_advanced_toolbar_location : "top",
theme_advanced_toolbar_align : "left",
theme_advanced_statusbar_location : "none",
theme_advanced_resizing : true,
convert_urls : false,
fullpage_default_doctype: "",
content_css : "css/content.css",
cleanup : false,
template_external_list_url : "lists/template_list.js",
external_link_list_url : "lists/link_list.js",
external_image_list_url : "lists/image_list.js",
media_external_list_url : "lists/media_list.js",
});
I had to add following line which fixed it.
theme_advanced_buttons3 : ""