s_photo=split(start_photo,".")

if s_photo(ubound(split(start_photo,".")))<>"jpg" or s_photo(ubound(split(start_photo,".")))<>"gif" or s_photo(ubound(split(start_photo,".")))<>"bmp" or s_photo(ubound(split(start_photo,".")))<>"png" then response.write("<script language=javascript>alert('照片格式必需是“JPG”、“GIF”、“BMP”、“PNG”');history.back()</script>")

逻辑性太差

if right(trim(start_photo),4)&lt;&gt;".jpg" or...............