网页之跑马灯文字特效

zw2004

//修改宽度
* s/ ?" b6 j7 n, h2 I% lvar marqueewidth=300# |+ g9 M. T; i8 J  V. u
//高度
  r- U! s* P' ]var marqueeheight=25
9 {' Z- c$ O2 [( q3 \" D; l//速度(1-10)
* A* Z6 a9 S+ q2 V" I1 {, a7 I  f4 Yvar marqueespeed=3
; [; }# e  A) o3 r: n2 w//背景颜色1 _# C) ~8 s+ d0 y" z! `
var marqueebgcolor="#FFFFFF"
' S, ^1 D1 C" p0 _//是否能暂停 (0=no. 1=yes)?
4 x$ v+ g9 z: g$ A& Y3 p4 T3 B# E8 avar pauseit=1
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! V3 C* Z9 h2 f! [7 ?% F//修改显示内容
( [7 o0 N+ [3 z6 R6 S  H( l4 pvar 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>'
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////下面不需改变////////////
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* c0 w, C- x  U& ~, h. gvar copyspeed=marqueespeed
% D2 Q8 n( d. c7 p0 a: U* Lvar pausespeed=(pauseit==0)? copyspeed: 0( I$ q- `0 d  j# a# t; |
var iedom=document.all||document.getElementById
, x' R' ]+ M/ f' dif (iedom)3 P  w0 E3 r- l5 n, k6 o
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')4 l! k) \6 H" {) ^/ C
var actualwidth=''5 }7 W' Q6 C  j5 S- R9 _* ?
var cross_marquee, ns_marquee% \+ a) K" O  D/ M

' q& }* {# V1 U' `0 W. nfunction populate(){* X8 F# ]0 K  e& ]
if (iedom){- w3 r! H2 o" x
cross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
; H0 T2 T4 e3 d8 m, i# u* u+ ^cross_marquee.style.left=marqueewidth+8, A4 K  q: @: c; s! j
cross_marquee.innerHTML=marqueecontent' H5 u& ]$ o; e# e" ?" c: w
actualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth
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else if (document.layers){/ }2 I( v. ^9 q+ G8 w
ns_marquee=document.ns_marquee.document.ns_marquee2& t2 Y# }/ _0 [
ns_marquee.left=marqueewidth+8
- k  M* H( z" e, r9 G# i2 Qns_marquee.document.write(marqueecontent)8 s; n# x5 N1 a
ns_marquee.document.close()5 w4 k/ M0 {7 Y% j6 A+ p
actualwidth=ns_marquee.document.width
, d5 S$ r5 P6 O, M% X5 Z; k2 m0 u}
, B$ e7 r6 v+ i5 C6 f7 ^( \lefttime=setInterval("scrollmarquee()",20)
# {) i. b4 I' l( a- K" S9 c; |}) R! u  K$ ]) c( m6 P, G
window.onload=populate
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function scrollmarquee(){
1 V5 D  |* n& ^9 U6 ]5 P1 X: mif (iedom){
2 q; O* o7 k9 S  u4 W- sif (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))# J6 i6 ~) F) }1 `
cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed
* z, q, d# ^+ ~0 s5 b( W, Y9 q9 }else# ]* F5 l. r  G# s4 f
cross_marquee.style.left=marqueewidth+85 Z! k: R$ U0 p; N4 Z* a
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else if (document.layers){
8 J% r+ A0 o: a! B$ M0 ~5 Y6 uif (ns_marquee.left>(actualwidth*(-1)+8))4 h0 d' ^( P  e+ g9 f: n2 d5 y
ns_marquee.left-=copyspeed5 f5 h, z! G8 @/ X! I5 e) W
else
& S; l/ ~+ V! _1 P/ S: O7 Nns_marquee.left=marqueewidth+83 e: R( }6 p6 s& i
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}
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if (iedom||document.layers){! s' ]% ^+ V7 N2 y  @' I
with (document){
& R& B# Z6 M4 adocument.write('<table border="0" cellspacing="0" cellpadding="0"><td>')7 x& ^( f+ l+ E; \& s( U  ]
if (iedom){% j- y+ T4 `/ {# d# G1 K+ w' a
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
- m2 a) m# _0 }8 ~: dwrite('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
( d4 \5 U! A, ]' L, y8 uwrite('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
( {" L) u6 K# I& Vwrite('</div>'), V' U( I1 g* z5 p9 u7 f
}
, ?0 t* n$ l* p* I5 g  aelse if (document.layers){! B0 v+ @; N" {1 q  t" Y+ X  m# J! \. v
write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')* ?  f' o' J: [% L! W4 K( X3 W
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')# m5 C5 a+ v7 J/ T* _3 z% X
write('</ilayer>')* V( r9 q+ |: s+ B2 D
}
% x8 q* a2 z- L- r: `  Fdocument.write('</td></table>')3 L7 J4 @8 ?% J) p" ]0 {5 h
}
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</script>