jquery select by position

css_select_by_position.js

// http://stackoverflow.com/a/9769532/814031
$('*').filter(function(){
   var position = $(this).css('position');
   return position === 'absolute';
});

// or extend jquery selector engine
// http://stackoverflow.com/a/9770766/814031
$.extend($.expr[':'],{
    absolute: function(el) {
        return $(el).css('position') === 'absolute';
    },
    relative: function (el) {
        return $(el).css('position') === 'relative';
    },
    static: function (el) {
        return $(el).css('position') === 'static';
    },
    fixed: function (el) {
        return $(el).css('position') === 'fixed';
    }
});