ohhh man
Where are you from time :)

thank you
the second worked like what i need

but the first still don't work i will show to you my code to can help me

jquery script

<script type="text/javascript">
    jQuery("#fadeout").click(function () {
        jQuery(".theDiv").fadeOut(4000, function () {
        });
    });
    function MM_callJS(jsStr) { //v2.0
        return eval(jsStr)
    }
</script>

okay and HTML

<a class="btn_phone theDiv" id="fadeout" onclick="MM_callJS('$(\&quot;.theDiv\&quot;).fadeOut(1500)')">Contact by phone</a>
                            <div id="m" ><span  ><%#Eval("PHONE_NO1")%></span></div>

i try to do what you said unfortunately still not working what you think