[jQuery] How to get all CSS values from Attributes

[Jeroen]

Suppose this piece of css, how would I get the values for top, margin-
left or padding?

#divname {
   top: 0;
   margin-left: 1px;
   padding: 7px;
}

Setting this is easy:

$(#divname).css('height', '200px');

And getting it also:

var foo = $(#divname).width();
or
var foo = $('#divname').get(0).width;

However  top, margin etc. I don't how to fetch it. Probably very
obvious problem but seem to overlook it.
Thanks in advance!

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Jeroen