hi , i am new in jquery .

i use following code

<script src="http://code.jquery.com/jquery-latest.min.js"></script>

<script>var kk = $("err_pos");alert(kk);</script>

<div id="err_pos">this is a test form</div>

now ny problem is each time this alert show me as "[object Object]". what it means. m i doing something wrong...??please help