Record

# public class Singleton { 
#  
#     private static class Holder { 
#         private static final Singleton instance = new Singleton(); 
#     } 
#  
#     private Singleton() { 
#     } 
#  
#     public static Singleton getInstance() { 
#         return Holder.instance; 
#     } 
# }

//判断页面是否开始加载
function loadBeg()
{
    if(document.body!=null)
    {
        //run()
    }
    else
    {
        setTimeout(function(){loadBeg()},500);
    }
}
//IE6下PNG透明背景修复
progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + iebg + "',sizingMethod='scale

//ff下的trigger
var ev = document.createEvent('HTMLEvents');

ev.initEvent('submit', false, true);

form.dispatchEvent(ev);

元素类型  节点类型
元素element 1
属性attr 2
文本text 3
注释comments 8
文档document 9