点击弹出个窗体，如果点击多次就出现多次
???
??
? Ext.get("grid").on("click",function win(){
?
? var win=new Ext.Window({
??? el:'win',
??? layout:'fit',
??? width:300,
??? height:200,
??? modal:true,
??? closeAction:'hide',
???? items:[form]
???
? });
??? win.show();
? });
?
});
</script>??
???? <script type="text/javascript" src="ext/locale/ext-lang-zh_CN.js"></script>
? </head>
?
? <body>
? <div id="grid"></div>
? <div id="win"></div>
? </body>
</html>
点击弹出个窗体，如果点击多次就出现多次，我知道多次点击只有弹出一次怎么样解决呢
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