1<br>1<br>1<br>0<br>Your image has been saved
<hr>
<pre><code>

test1 = "image.jpg"
test2 = "image.gif"
test3 = "image.png"
test4 = "image.txt"

response.write testFileType(test1)&"<br>"
response.write testFileType(test2)&"<br>"
response.write testFileType(test3)&"<br>"
response.write testFileType(test4)&"<br>"

if testFileType(test1) = 1 then
	response.write "Your image has been saved"
    else
	response.write "This image is the wrong file type"
	
end if

function testFileType(FileName)
   AllowedTypes = " jpg gif png "
   FileType=right(FileName,3)
   if instr(AllowedTypes,FileType) > 0 Then
        testFileType = 1
        else
        testFileType = 0
   end if

' http://www.w3schools.com/asp/func_instr.asp
end function
</code></pre>