lib/vow.js
function() {
                    var script = doc.createElement('script');
                    script.onreadystatechange = function() {
                        script.parentNode.removeChild(script);
                        script = script.onreadystatechange = null;
                        callFns();
                };
                (doc.documentElement || doc.body).appendChild(script);
            }
function() {
                    var script = doc.createElement('script');
                    script.onreadystatechange = function() {
                        script.parentNode.removeChild(script);
                        script = script.onreadystatechange = null;
                        callFns();
                };
                (doc.documentElement || doc.body).appendChild(script);
            }
function ( ) { var script = doc . createElement ( 'script' ) ; script . onreadystatechange = function ( ) { script . parentNode . removeChild ( script ) ; script = script . onreadystatechange = null ; callFns ( ) ; } ; ( doc . documentElement || doc . body ) . appendChild ( script ) ; }
ie6-ie8
ie6 - ie8