how to have a google transliteration on custom textarea?

hi,can any body tell me how to include google transliteration on a custom textarea.I have used it on comment field and it works fine but i want it to be on my own custom text area. what id or name attribute do i need to provide? i know below code is the reason tht shows the language drop down.

<div style="padding-top:7px;" id='translControl'>
					<input type="checkbox" style="width:20px;margin:0;" id="chbxGtransliterate" onclick="g_transliteration();" />
					<small><?php _e("Enable Google Transliteration.(To type in English, press Ctrl+g)", "google-transliteration"); ?></small>
				</div>