if (ubB.ie3||ubB.ns2||ubB.ns3||(ubB.ie4&&ubB.mac)) {
	//redirect
	window.location='http://www.corixa.com/browser_na.asp'
}
else if (ubB.ns4 && ubB.mac) {
	//serve up ns4/mac stylesheet
	document.write('<link rel="stylesheet" href="style/all_ns4mac.css" type="text/css">')
}
else {
	//serve up default stylesheet
	document.write('<link rel="stylesheet" href="style/all.css" type="text/css">')
}