[jQuery] swap z-indexes

[jQuery] swap z-indexes


hi,
im using a few prebuilt scripts together, namely
jQuery easing plugin from http://gsgd.co.uk/sandbox/jquery.easing.php
and
jQuery Tooltip by Jörn Zaefferer (http://bassistance.de)
I have an unordered list of images all floated left and displayed inline
with absolute positioning and tpo and left margins to make them look random.
All is well, I was just hoping somone would have a more elegant solution to
swapping z-index on the 30 or so images on .hover in/out states.
code:
var my_zIndex;
var method = 'expoout';
$(document).ready(function() {
    $("#polaroids").find("img").each(function(i){
        my_zIndex = document.getElementById(this.id).style.zIndex;
        $(this).Tooltip({extraClass: "fancy",fixPNG: true});
            $(this).hover(
                function() {
                    $(this).animate({width:90,height:90}, {duration: 500, easeMethod:
method});
                    $(this).css({zIndex: my_zIndex+500});
                }
                ,function() {
                    $(this).animate({width:80,height:80}, {duration: 500, easeMethod:
method});
                    $(this).css("z-index",my_zIndex);
                }
            );    
    });
});
        $(function() {
// modify global settings
$.extend($.fn.Tooltip.defaults, {
    track: false,
    delay: 500,
    showURL: false,
    showBody: " - "
});
});
any help is muchly appreciated :) thanks!
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