(function ($){ 
$.extend($.expr[":"] , { 
attached: a,
detached: function (b){ 
return !a(b); 
} 
}
); 
function a(c){ 
var b = $.contains, d = document.documentElement; 
if (b) { 
return b(d, c); 
} 
while (c = c.parentNode){ 
if (c === d) { 
return true ; 
} 
} 
return false ; 
} 
} 
)(jQuery);