使用Javascript for HtmlEditorExtender的谷歌翻译不起作用

I have used the text box with ajaxtoolkit HtmlEditorExtender(Rich textbox) for translating English to Gujarati using Google translation Javascript. It works well only for text box, but when I used HtmlEditorExtender(Rich textbox) it does not work.I have used the text box with ajaxtoolkit HtmlE