I would like to detect whether the client browser can render png images. I see the following from Netscape 4.61 HTTP_ACCEPT image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */* HTTP_USER_AGENT Mozilla/4.61 [en] (Win95; I) and this from MSIE 5.0 HTTP_ACCEPT image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/msword, */* HTTP_USER_AGENT Mozilla/4.0 (compatible; MSIE 5.0; Windows 95; DigExt; btclick.com Build BTCFUNFD1) I know that MSIE 5.0 can render png's (by observation) and by report that Netscape 3.x cannot. Question: Parse HTTP_USER_AGENT to determine netscape/msie or do I rely on the apparently unreliable HTTP_ACCEPT? -- Robin Becker