i have a problem regarding the textbox. i have done the textbox auto expandable but when i insert the text first time then the textbox shrink in size from their original size.but my requirement is that when my text is exceeding the text box length then it auto expand. my code is

<script type="text/javascript">
        $(document).ready(function() {
            $('.txtStyle').autogrow();
        });
</script>

pls somebody suggest how ot is possible