The trend lives on despite the support Web standards receive from several new browsers, including Netscape's latest, its open-source cousin Mozilla and others such as Opera and iCab. Shutterfly's browser preference page is more than ironic it reflects an ongoing bias among some Web sites to write and test their pages for the browser most people use-Internet Explorer. Versions 6 and higher of the browser are 'unsupported,' meaning people who use them cannot take advantage of several site features and may run into glitches not found with Microsoft's Internet Explorer, according to a browser error message being published on the site as of last Wednesday. Now online photo print shop Shutterfly, another Clark-founded venture, has a succinct warning for visitors who come to the site using the latest versions of Netscape: Beware. When he co-founded Netscape Communications in 1994, Jim Clark introduced a Web browser that promised computer users a way around the Microsoft juggernaut.