<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>管理区域</title>
<style>
body{margin:0}
form{
margin:0;padding:0;
}
input{
float:left;height:22px;border:1px solid #DBE6E3;background:#FFF;
width:250px;
}
.btn1{
    width: 50px;
    border: none;
    background: url("images/btn1.gif") 0 0 no-repeat;
    color: #0099CC;
    cursor: pointer;
}

input[type="file"] {
    color:#CCC;
    font-size:12px;
}

</style>
<script>
function chkuploadfile(){
    if(document.getElementById("filedata").value == ''){
        alert('请选择需要上传的文件');
        return false;
    }
    return true;
}
</script>
</head>

<body>
<form method="post" name="form1" action="imgUploadFile.php?id=<?php echo $_GET['id'] ?? ''; ?>&act=s" enctype="multipart/form-data" onsubmit="return chkuploadfile()">
<input type="file" name="filedata" id="filedata" /><input type="submit" value="上传" class="btn1" />
</form>
</body>
</html>