网页之跑马灯文字特效

zw2004

//修改宽度: F( u1 H* I! f3 r& C
var marqueewidth=3001 R0 M& A/ Z' j6 P" G0 L8 [! A
//高度( X. U/ c0 N+ C, |2 I4 t
var marqueeheight=25% ?( W( @/ `1 w/ k4 [0 R
//速度(1-10)* N$ w7 A5 \' Y9 B/ X& l* w
var marqueespeed=3
6 e4 ~8 f& ^. r//背景颜色
. d9 d, a3 R- ~9 f3 X3 _, C1 w! Evar marqueebgcolor="#FFFFFF"
3 Z4 e7 r! Q8 r) }& o//是否能暂停 (0=no. 1=yes)?; i" J7 y& b5 P
var pauseit=1
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# j- }; {1 w/ k0 A//修改显示内容% d: n( Z9 C, {4 T' x# X9 t
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>'
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6 l, `/ w* h# b& p6 ]1 m- D////下面不需改变////////////
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var copyspeed=marqueespeed
$ X5 W6 `) [, n8 l3 I9 E2 `8 Kvar pausespeed=(pauseit==0)? copyspeed: 0
: s# V9 ?) D  Z3 P  D: k4 Q" ]# y1 ]var iedom=document.all||document.getElementById
# M( @8 g- {/ K3 e- k, C$ x$ Oif (iedom)7 R2 t, R9 M. M7 w; T
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')
' V* p  p: O. I" Qvar actualwidth=''3 }6 F+ C2 R* q' e
var cross_marquee, ns_marquee' M" m( U) [2 p: [" n" N# o

! W9 R4 D3 |6 _& s* xfunction populate(){
8 Q) v2 K9 ^: t% {8 rif (iedom){
: ?7 f9 N" g: H% u  @1 gcross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee, Y- z* [  a+ N0 K3 l; b& ^5 |; x
cross_marquee.style.left=marqueewidth+8$ w8 {/ D( g. L# k- V2 `- K
cross_marquee.innerHTML=marqueecontent; f/ x9 `1 i; ]  Y- ]) U$ K$ z
actualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth
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else if (document.layers){" O# z( b* P: {5 Y8 w) e
ns_marquee=document.ns_marquee.document.ns_marquee20 x6 w* e3 F0 q
ns_marquee.left=marqueewidth+8
5 B! ^. {( `: U8 kns_marquee.document.write(marqueecontent)
0 j  {. S: v9 _# [0 m7 yns_marquee.document.close()
! v$ x. B3 p( l; a! _0 Aactualwidth=ns_marquee.document.width
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lefttime=setInterval("scrollmarquee()",20)6 w7 v, P- L$ E$ k0 P+ Y
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window.onload=populate/ p  o, t* [  I2 {
  v- q( s3 `" {
function scrollmarquee(){
4 P: `, P: W- n$ j5 t3 wif (iedom){4 Q5 B1 e8 c4 k& `! a; ?
if (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))  a% C4 j& U: F8 r3 U! y4 Z$ N
cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed, w7 y7 n- J8 M
else* b6 z# E& P" {
cross_marquee.style.left=marqueewidth+83 Y/ z+ p# q+ s
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}  _2 _! B+ J8 ~* m
else if (document.layers){$ G8 ?  M/ I4 u# B% N
if (ns_marquee.left>(actualwidth*(-1)+8))% c/ W+ y# z3 I& i# h8 D
ns_marquee.left-=copyspeed
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ns_marquee.left=marqueewidth+8! \# ]/ K; n( v8 v) `) W6 D
}; _; S8 _9 f+ w3 T" i
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' |, }  ]' L% cif (iedom||document.layers){7 O$ c; J/ W; a. R- P8 h0 B: j
with (document){+ U* ^. R6 t$ n5 G8 Y
document.write('<table border="0" cellspacing="0" cellpadding="0"><td>')
/ K6 y) {  p+ b, W; w2 Hif (iedom){
9 s0 k! [3 n: R1 B* D" I; Twrite('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')" t* b& r6 s# c5 y( b- i- a+ r8 C6 B5 b
write('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
2 X- w8 _5 R, u% r! mwrite('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
- M4 H1 K% A2 s( Qwrite('</div>'), i2 @  D$ T$ b2 [1 j
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else if (document.layers){
5 x+ _( B4 a/ R, u. f  Swrite('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')* Y& g" |& \8 w( i3 z( ~
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')
8 T1 g$ {! S7 z7 H& Fwrite('</ilayer>')
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document.write('</td></table>')
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}
% g) o+ n7 ^) r: X% B</script>