网页之跑马灯文字特效

zw2004

//修改宽度/ N: ~- l& H- C! W# o! R
var marqueewidth=300& A' m! z/ I& {  t0 Z
//高度
/ ]) z& ]* D6 s: Z* `( g" p: {var marqueeheight=25
% X! a5 f9 |: I' J# u, g' l//速度(1-10)
) U" e: g; Z0 e- g8 Kvar marqueespeed=3- l6 m. k% ?! X2 P( e! o2 V
//背景颜色
  {: W; N( X, Y$ Avar marqueebgcolor="#FFFFFF"4 |% C6 s6 {6 r/ ?) h
//是否能暂停 (0=no. 1=yes)?
  T/ k% c9 u0 ^0 J* [var pauseit=1
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//修改显示内容& p  t7 z" k6 z9 D' [' m
var marqueecontent='<nobr><font face="Arial" size=2><a href="http://www.jzzy.com/js.asp">欢迎光临七色风网页家园</a>--这里有从上千个网页特效中精选的300多个实用的特效，另外，为了网友更方便地学习，我们还改写和编写了部分的特效，并作了详细的说明和必要的使用提示!</font></nobr>'/ u4 q. l1 A! y7 L: i

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////下面不需改变////////////
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var copyspeed=marqueespeed
6 r$ _" }' H9 O* U  q" kvar pausespeed=(pauseit==0)? copyspeed: 0
' h, L1 ]7 A( J' u, Y+ Q$ f; Pvar iedom=document.all||document.getElementById1 B# y# o+ G0 g0 O7 }+ n
if (iedom)" H4 l( u: i4 I2 g& @% F  F
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')
9 Z% q0 p7 U/ t5 T0 z5 Q+ Svar actualwidth=''
* H3 c1 I; U9 Q8 E+ xvar cross_marquee, ns_marquee! g( t  l! n3 l& F& e9 q' R

) Z; y0 Y8 S" W8 x5 f; Rfunction populate(){+ u. C3 g* d0 B- h4 C4 H- R
if (iedom){" ?: |  m8 |2 g/ u+ K: \! L
cross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
: t, R9 j" q0 `9 d/ Q' ocross_marquee.style.left=marqueewidth+8
7 o7 r* ~8 `9 V! x4 tcross_marquee.innerHTML=marqueecontent
& Z" q% ^2 B2 l7 h' Aactualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth& z8 o" Z( l5 t$ d& N
}
8 y6 q5 S3 C$ e; w* X3 I# u  _else if (document.layers){3 W. C0 C5 J* K, y
ns_marquee=document.ns_marquee.document.ns_marquee2: ^0 D3 I- N: x) ~* o9 }8 r
ns_marquee.left=marqueewidth+8
. S& k: M) G( r% W  Z4 h( t2 xns_marquee.document.write(marqueecontent)
5 F5 O0 I/ E- `% Pns_marquee.document.close()0 t4 }# W. o4 l! E) \$ r2 q9 V
actualwidth=ns_marquee.document.width
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& [/ K: K" {7 p- I( a& ]4 b5 }lefttime=setInterval("scrollmarquee()",20)
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3 z$ f5 i6 o8 N, J/ f) Ewindow.onload=populate
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function scrollmarquee(){) s; X8 H+ t- b6 g. k7 B
if (iedom){8 f# Z) O) @5 ?+ {$ V3 ?) |
if (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))
) y* B9 Z2 k% x  Qcross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed9 i: j0 d: m5 M- {: M: E' T. j
else% [& e# L; U4 m1 i6 J/ s3 s
cross_marquee.style.left=marqueewidth+85 ~. i/ {  t0 ^& A3 Q& K5 t6 z
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else if (document.layers){) H: t; f5 T0 a6 @5 K1 D8 D( Z
if (ns_marquee.left>(actualwidth*(-1)+8))
" X! A, X7 l! A) l3 f3 wns_marquee.left-=copyspeed6 c  Y1 S& X1 x1 f) I1 E1 {
else
, v  d4 k" P: j  \ns_marquee.left=marqueewidth+8; U* L, F2 ~  h: z! [5 y9 j
}
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if (iedom||document.layers){
+ X# @; u5 L2 `with (document){
, i& P5 r3 s2 ^7 Rdocument.write('<table border="0" cellspacing="0" cellpadding="0"><td>')
( e  S9 w$ J' J( ~if (iedom){
. J0 N; W9 n3 ]7 `' Gwrite('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')# |% E% h& E, |. h- `
write('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')' N  d9 B; B. q5 k" |  v
write('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')5 E; {. N; S2 B. ?- H! l: B
write('</div>')! U& I5 w  e' k( S$ k' `
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else if (document.layers){
* i" ?+ F& P1 c9 E  O8 wwrite('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')) P0 _! @. {3 ~8 w+ U! \1 n
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')
  l( W  N/ O/ _  \: c+ Q4 N2 Kwrite('</ilayer>')1 ~, L) n5 Q, B1 l. x0 [/ S
}) n7 i+ P$ a# E' k
document.write('</td></table>')- G: S) _; K) R& L- _( ?- O$ J
}
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3 [2 T& f5 l# f# t: B</script>