If this error occurred in a script section of your document, 
you should probably read this FAQ entry.
Error Line 9, Column 18: an attribute value must be a literal 
unless it contains only name characters

<table width = 17%>

You have used a character that is not considered a "name character" 
in an attribute value. Which characters are considered "name characters" 
varies between the different document types, but a good rule of thumb is
that unless the value contains only lower or upper case letters in the 
range a-z you must put quotation marks around the value. In fact, 
unless you have extreme file size requirements it is a very very good idea
to always put quote marks around your attribute values. It is never wrong
to do so, and very often it is absolutely necessary."