<s>
DOM	B-Operating_System
Inspector	I-Operating_System
(	O
DOMi	O
)	O
is	O
a	O
web	O
developer	O
tool	O
created	O
by	O
Joe	O
Hewitt	O
and	O
was	O
originally	O
included	O
in	O
Mozilla	B-Language
Application	I-Language
Suite	I-Language
as	O
well	O
as	O
versions	O
of	O
Mozilla	B-Application
Firefox	I-Application
prior	O
to	O
Firefox	B-Language
3	I-Language
.	O
</s>
<s>
It	O
is	O
now	O
included	O
in	O
Firefox	B-Application
,	O
and	O
SeaMonkey	B-Language
.	O
</s>
<s>
Its	O
main	O
purpose	O
is	O
to	O
inspect	O
and	O
edit	O
the	O
Document	B-General_Concept
Object	I-General_Concept
Model	I-General_Concept
(	O
DOM	B-General_Concept
)	O
tree	O
of	O
HTML	B-Language
and	O
XML-based	O
documents	O
.	O
</s>
<s>
A	O
DOM	B-General_Concept
node	O
can	O
be	O
selected	O
from	O
the	O
tree	B-Data_Structure
structure	I-Data_Structure
,	O
or	O
by	O
clicking	O
on	O
the	O
browser	O
chrome	B-Application
.	O
</s>
<s>
As	O
well	O
as	O
the	B-General_Concept
DOM	I-General_Concept
tree	O
viewer	O
,	O
other	O
viewers	O
are	O
also	O
available	O
,	O
including	O
Box	O
Model	O
,	O
XBL	B-Application
Bindings	O
,	O
CSS	B-Language
Rules	O
,	O
Style	O
Sheets	O
,	O
Computed	O
Style	O
,	O
JavaScript	B-Language
Object	O
,	O
as	O
well	O
as	O
a	O
number	O
of	O
viewers	O
for	O
document	O
and	O
application	O
accessibility	O
.	O
</s>
<s>
By	O
default	O
,	O
the	B-General_Concept
DOM	I-General_Concept
Inspector	O
highlights	O
a	O
newly	O
selected	O
non-attribute	O
node	O
with	O
a	O
red	O
flashing	O
border	O
.	O
</s>
<s>
Similar	O
tools	O
exist	O
in	O
other	O
browsers	O
,	O
e.g.	O
,	O
Opera	B-Application
's	I-Application
Dragonfly	B-Application
,	O
Safari	B-Application
's	I-Application
Web	B-Application
Inspector	I-Application
,	O
the	O
Internet	B-Application
Explorer	I-Application
Developer	I-Application
Toolbar	I-Application
,	O
and	O
Google	B-Application
Chrome	I-Application
's	O
Developer	O
Tools	O
.	O
</s>
