<script language="javascript">
function check()
{
eval("var ncd=document.form1.file1.value;");
if (ncd!="") var nstr=findname(ncd);
if (typeof(nstr)=="undefined" || nstr==""){alert("找不到你要上传的文件~!\n请
重新选择");return false;}
else {
alert("文件名:" + nstr + "\n"); return false;
}
}
function findname(vl)
{var no0=vl.lastIndexOf("\\");
var no1=vl.lastIndexOf(".");
var no2=vl.indexOf(":");
if (no0==-1 || no1==-1 || no2!=1 || no0>no1) return ;
var fname=vl.substr(no0+1);
return fname;
}
</script>
<form name="form1" method="post" onsubmit="return check()">
<input type="file" name="file1">
<input type="submit" name="Submit" value="·提交·">
</form>