<script type="text/javascript">
tinyMCE.init({
        // General options
        mode : "textareas",
        theme : "advanced",
        plugins : "table,inlinepopups",

        // Theme options
        theme_advanced_buttons1 : "bold,italic,underline,strikethrough,|,justifyleft,justifycenter,justifyright,justifyfull,|,styleselect,formatselect,|,table,removeformat,code",
        theme_advanced_buttons2 : "",
        theme_advanced_buttons3 : "",
        theme_advanced_buttons4 : "",
        theme_advanced_toolbar_location : "top",
        theme_advanced_toolbar_align : "left",
        theme_advanced_statusbar_location : "bottom",
        theme_advanced_resizing : true,

        // Example content CSS (should be your site CSS)
  	content_css : "/example_data/content.css",

        // Style formats
        style_formats : [
                {title : 'Bold text', inline : 'b'},
                {title : 'Red text', inline : 'span', styles : {color : '#ff0000'}},
                {title : 'Red header', block : 'h1', styles : {color : '#ff0000'}},
                {title : 'Example 1', inline : 'span', classes : 'example1'},
                {title : 'Example 2', inline : 'span', classes : 'example2'},
                {title : 'Table styles'},
                {title : 'Table row 1', selector : 'tr', classes : 'tablerow1'}
        ],

        formats : {
                alignleft : {selector : 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes : 'left'},
                aligncenter : {selector : 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes : 'center'},
                alignright : {selector : 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes : 'right'},
                alignfull : {selector : 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes : 'full'},
                bold : {inline : 'span', 'classes' : 'bold'},
                italic : {inline : 'span', 'classes' : 'italic'},
                underline : {inline : 'span', 'classes' : 'underline', exact : true},
                strikethrough : {inline : 'del'},
                customformat : {inline : 'span', styles : {color : '#00ff00', fontSize : '20px'}, attributes : {title : 'My custom format'}}
        }
});
</script>

<form method="post" action="somepage">
  <textarea name="content" style="width:100%; height: 400px;">
&lt;h1&gt;This is a title&lt;/h1&gt;
&lt;p&gt;This is &lt;strong&gt;my text&lt;/strong&gt; that I &lt;strong&gt;use&lt;/strong&gt; for my example.&lt;/p&gt;

&lt;h2&gt;Another title&lt;/h2&gt;
&lt;p&gt;Wooh, nice example.&lt;/p&gt;
</textarea>
</form>
<div>
        <a href="#" onclick="tinymce.activeEditor.formatter.apply('customformat');return false;">[Apply custom format]</a>
        <a href="#" onclick="tinymce.activeEditor.formatter.remove('customformat');return false;">[Remove custom format]</a>
</div>