Reading styles with jQuery

Reading styles with jQuery

 Ok, this is driving me up the wall.  I have two textarea elements on my page.  I set the padding for one inline and I set the padding for the other in a header style.  When running this:

$("textarea").each(function(){

alert($(this).css("padding"));

});

I only get the padding value for the textarea with inline styles.  How can I get styles set in the header or from external styles sheets?

I've searched and searched, but I guess I'm not looking in the right places for my answer.  THANKS!