js ie下有效 showModalDialog 、showModelessDialog

         <input type="button" value="打开选择输入框"/>
         <script type="text/javascript">

       //IE有效 chrome无效       模式 与非模式
          //window.showModalDialog("asdfasdf");
          //window.showModelessDialog("asdfasdf");
             //定位按钮，同时添加事件
             document.getElementsByTagName("input")[0].onclick=function(){
                 //以模式和非模式方式打开窗口
                 var url = "childNodes.html";
                 var sFeatures = "dialogHeight:400px;dialogWidth:200px;dialogLeft:20%";

                 window.showModalDialog(url,null,sFeatures);//模式（用途较多)
                 //window.showModelessDialog(url);//非模式
             }
         </script>