+(defvar *standard-html-header* "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML//EN\">")
+
+(defvar *standard-xhtml-header*
+ #.(format nil "<?xml version=\"1.0\" standalone=\"yes\"?>~%<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3c.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">"))
+
+
+;;; User agent functions
+
+(defun user-agent-ie-p (agent)
+ "Takes a user-agent string and returns T for Internet Explorer."
+ (when (or (string-equal "Microsoft" (subseq agent 0 (length "Microsoft")))
+ (string-equal "Internet Explore" (subseq agent 0 (length "Internet Explore")))
+ (search "MSIE" agent))
+ t))