If Statement In Loop

Is there something that prevents an if statement from being inside a loop. I keep gettting an error I put an if statement in my loop. Here's my code:

Do While Not categoryRS.EOF

response.write "<a href='away100.asp?playcategory=" & categoryRS("catname") &"&timer="& timer&"'><big><strong>"
if categoryRS("catname")=playcategory then
response.write "<font color='red'>" & categoryRS("catname") & "</font>"
else
response.write categoryRS("catname")
endif
response.write "</strong></big></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>"
'Move to the next row in the lists table
categoryRS.MoveNext
Loop