javascript - how to get the exact height of header in jquery mobile -


i'm new jqm , want exact height of header, can't seem accurately. need iphone app should detect header's height on iphone 4 retina display (or ipad).

my current test is:

<div data-role="page" data-theme="m">   <div id="hdr" data-role="header">     <a id="bk" href="index.html" data-role="button">back</a>     <div style="margin:0 auto;text-align:center;"><img src="../images/lgo_iph.png" alt="" /></div>     <a href="index.html" data-role="button">cancel</a>  </div> </div>

and height with:

$(document).live("pageshow", function(){  alert($('#hdr').outerheight(true));  });

which alerts 22, not correct if substitute $('#hdr') $('#bk') 28 height should smaller.

any help?

thank you.


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