The CSS validator servlet expects the following parameters:
* means a default value is provided or null is the normal value

	 uri (uri that is validated, if null this implies it comes from a textarea.)
	 text (text entered in textarea for textarea validation)
	* output (format to output (i.e. text/html or text/plain) This is null when invoking the servlet)
	* warning (warning level, default is 2)
	* error (you can turn off the error report by giving a value "no", leave it null by default)
	* profile (the CSS version you are validating against, default is css2)
	 usermedium (the usermedium you are validating for, i.e. print, aural. You should provide the default: "all")
	 
	 
	 - One of uri or text should always have a value