function ready(fn){if(document.addEventListener) {document.addEventListener(‘DOMContentLoaded‘, function() {//注销事件, 避免反复触发document.removeEventListener(‘DOMContentLoaded‘,arguments.callee, false);fn(); //执行函数}, false);}else if(document.attachEvent) { //IEdocument.attachEvent(‘onreadystatechange‘, function() {if(document.readyState == ‘complete‘) {document.detachEvent(‘onreadystatechange‘, arguments.callee);fn(); //函数执行}});}};