from w3.org's html 4.01 recommendation:

By default, SGML requires that all attribute values be 
delimited using either double quotation marks (ASCII 
decimal 34) or single quotation marks (ASCII decimal 39). 
Single quote marks can be included within the attribute 
value when the value is delimited by double quote marks, 
and vice versa. Authors may also use numeric character 
references to represent double quotes (") and single 
quotes ('). For double quotes authors can also use the 
character entity reference ".

In certain cases, authors may specify the value of an 
attribute without any quotation marks. The attribute value 
may only contain letters (a-z and A-Z), digits (0-9), 
hyphens (ASCII decimal 45), periods (ASCII decimal 46), 
underscores (ASCII decimal 95), and colons (ASCII decimal 
58). We recommend using quotation marks even when it is 
possible to eliminate them.

[download]
so according to that, attribute values don't have to be surrounded in quotes. but also, commas aren't allowed in the attribute value either.

In reply to RE: Re: making html smaller by visnu
in thread making html smaller by visnu

Title:
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