JavaScript: Fixing IE z-index

gistfile1.js

/*
Source:http://css-tricks.com/snippets/jquery/fixing-ie-z-index/
*/
$(function() {
    var zIndexNumber = 1000;
    // Put your target element(s) in the selector below!
    $("div").each(function() {
        $(this).css('zIndex', zIndexNumber);
        zIndexNumber -= 10;
    });
});