<SCRIPT LANGUAGE="JavaScript"><!--function reAsk(sStr){ return confirm(sStr);}function getFileName(o){ var pos=o.value.lastIndexOf("\\"); return o.value.substring(pos+1);//文件名 }function GetFileExt(o){ return o.value.replace(/.+\./,"");}//--></SCRIPT>
<input type="file" size=38 name="file1" onchange="alert(getFileName(this)+'\n'+GetFileExt(this));"/>