<s>
In	O
computing	O
,	O
focus	B-Application
stealing	I-Application
is	O
a	O
mode	O
error	O
occurring	O
when	O
a	O
program	O
not	O
in	O
focus	B-Application
(	O
e.g.	O
</s>
<s>
This	O
is	O
considered	O
to	O
be	O
an	O
annoyance	O
or	O
hazard	O
to	O
some	O
users	O
because	O
the	O
program	O
may	O
steal	O
the	O
focus	B-Application
while	O
the	O
user	O
is	O
typing	O
,	O
causing	O
keystrokes	O
to	O
go	O
to	O
the	O
newly	O
focused	O
window	O
,	O
possibly	O
being	O
lost	O
or	O
causing	O
an	O
unintended	O
effect	O
therein	O
.	O
</s>
<s>
typing	O
while	O
looking	O
at	O
the	O
keyboard	O
or	O
while	O
reading	O
copy	O
to	O
the	O
side	O
,	O
or	O
if	O
processor	O
lag	O
causes	O
a	O
delay	O
(	O
sometimes	O
of	O
several	O
seconds	O
)	O
between	O
the	O
focus	B-Application
stealing	I-Application
event	O
and	O
the	O
newly	O
focused	O
window	O
displaying	O
on	O
the	O
screen	O
.	O
</s>
<s>
Focus	B-Application
stealing	I-Application
can	O
cause	O
damage	O
,	O
as	O
users	O
may	O
,	O
while	O
typing	O
when	O
their	O
attention	O
is	O
away	O
from	O
the	O
screen	O
,	O
inadvertently	O
agree	O
to	O
a	O
program	O
doing	O
something	O
that	O
causes	O
damage	O
.	O
</s>
<s>
For	O
example	O
,	O
when	O
Microsoft	B-Application
Windows	I-Application
pops	O
up	O
the	O
Disk	O
Cleanup	O
wizard	O
,	O
the	O
user	O
may	O
"	O
agree	O
"	O
to	O
deleting	O
files	O
without	O
realizing	O
that	O
the	O
wizard	O
was	O
waiting	O
for	O
input	O
.	O
</s>
<s>
Focus	B-Application
stealing	I-Application
can	O
also	O
occasion	O
security	O
breaches	O
,	O
for	O
example	O
,	O
when	O
a	O
user	O
enters	O
a	O
password	O
and	O
the	O
typed	O
password	O
appears	O
instead	O
in	O
a	O
new	O
instant-messaging	B-Application
window	O
in	O
an	O
unmasked	O
input	O
field	O
.	O
</s>
<s>
There	O
are	O
a	O
number	O
of	O
alternative	O
methods	O
for	O
grabbing	O
the	O
attention	O
of	O
the	O
user	O
that	O
can	O
be	O
used	O
instead	O
of	O
focus	B-Application
stealing	I-Application
:	O
</s>
<s>
The	O
following	O
window	B-Application
manager	I-Application
systems	O
allow	O
focus	B-Application
stealing	I-Application
:	O
</s>
<s>
Microsoft	O
Windows-based	O
systems	O
use	O
pop-up	O
dialogue	O
boxes	O
which	O
can	O
steal	O
focus	B-Application
from	O
the	O
current	O
application	O
.	O
</s>
<s>
On	O
versions	O
of	O
Microsoft	B-Application
Windows	I-Application
prior	O
to	O
Windows	O
7	O
,	O
there	O
is	O
a	O
user	O
setting	O
that	O
will	O
by	O
default	O
prevent	O
a	O
cooperative	O
application	O
from	O
stealing	O
focus	B-Application
when	O
launching	O
another	O
program	O
or	O
popping	O
up	O
a	O
new	O
window	O
or	O
dialogue	O
box	O
.	O
</s>
<s>
The	O
following	O
web	O
browsers	O
allow	O
focus	B-Application
stealing	I-Application
via	O
a	O
this.focus( )	O
JavaScript	B-Language
facility	O
:	O
</s>
<s>
Programs	O
have	O
been	O
written	O
to	O
identify	O
what	O
is	O
stealing	O
focus	B-Application
.	O
</s>
