How to ignore one texbox dont allow to make as tinymce editor

Hi Exprts,

in my html page i have lots of the text box controls, from those two textbox control are mode is multiline, one for descritption and another one is for tinymce editor.

but here both are converted as tinymce editor. i don't wont to description textbox as tinymce editor.

Here my code

<script type="text/javascript">
        tinyMCE.init({
            mode: "textareas",
            theme: "advanced",
            skin: "o2k7",
            skin_variant: "silver",
            plugins: "safari,spellchecker,pagebreak,style,layer,table,save, ...