代码格式，TAG字头

如：iframe href="" onmouseover=" while (1) {window .alert ('http://')}"




要求这些字头不可用

img=
embed=
font=
iframe=
input=
script=
a=
div=
acronym=
address=
applet=
area=
b=
base=
basefont=
bdo=
big=
blockquote=
body=
br=
button=
caption=
center=
cite=
code=
col=
colgroup=
dd=
del=
dfn=
dir=
dl=
dt=
em=
fieldset=
form=
frame=
frameset=
h1=
h2=
h3=
h4=
h5=
h6=
head=
hr=
html=
i=
ins=
isindex=
kbd=
label=
legend=
li=
link=
map=
menu=
meta=
noframes=
noscript=
object=
ol=
option=
p=
param=
pre=
q=
s=
samp=
select=
small=
span=
strike=
strong=
style=
sub=
sup=
table=
tbody=
td=
textarea=
tfoot=
th=
thead=
title=
tr=
tt=
u=
ul=
var=