set div position to fixed after scrolling 100px?

Posted by user1481850 on Stack Overflow See other posts from Stack Overflow or by user1481850
Published on 2012-07-05T09:09:38Z Indexed on 2012/07/05 9:15 UTC
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JavaScript

|

jQuery

I tried to use the following function in order to set the div's position to 100 px from top after scrolling 100 px.

<script src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
$(window).scroll(function(){
    $("#header").css("top",Math.max(0,100-$(this).scrollTop()));
});
</script>
<div class="header"  style="position:fixed;top:100px;background-color:red">something</div>

it is not working(the div stick to it's fixed position). it seems that the function is not relating to the div. what is my problem ?

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