为什么我这个打不开呀
<!DOCTYPE html>
<html>
 <head>
  <title> new document </title>  
  <meta http-equiv="Content-Type" content="text/html; charset=gbk"/>   
  <script type="text/javascript">  
    function openWindow(){
    var b=confiem("三风水");
if(b){window.open('http://www.imooc.com/','_blank','width=400px,height=500px);}
   else{alert("进来");openWindow();
    
  </script> 
 </head> 
 <body> 
   <input  name="button" type="button" value="新窗口打开网站" onClick="openWindow()" /> 
 </body>
</html>

 
                            