网页之跑马灯文字特效

zw2004

//修改宽度- V' D, N7 R& z* ~" q5 I" ~) u
var marqueewidth=300
- }9 i/ \; |8 H//高度
  Y* d$ j4 u' R, L- Avar marqueeheight=25
6 i8 K+ ~) Z, N& F0 J//速度(1-10)7 R: j8 g1 a) f& V( @
var marqueespeed=3  Q8 s7 e8 t" f% Y2 R
//背景颜色1 \: v2 t) L$ E6 B, y; n
var marqueebgcolor="#FFFFFF"
6 s& }9 ~- \, J  D//是否能暂停 (0=no. 1=yes)?" B+ X& e6 A9 Q8 x
var pauseit=1
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//修改显示内容% k4 G0 q3 `* L4 w, A
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>'0 ]% S3 h  E" h- r7 G! w2 L

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////下面不需改变////////////* r/ z9 e7 a) M6 @
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var copyspeed=marqueespeed
9 C/ B  d7 w* e; {. R8 @) Evar pausespeed=(pauseit==0)? copyspeed: 03 ^1 e- l4 i% Q8 O
var iedom=document.all||document.getElementById/ Y/ y* E/ E5 Z) i+ X' R9 }' J- z
if (iedom)6 B6 B* U* E" T
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>'). r/ `$ w2 n' e; L" a
var actualwidth=''
/ O9 ~; }( y& G1 d3 Mvar cross_marquee, ns_marquee& L8 _% `9 }9 i$ J7 W. k6 X* M6 _
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function populate(){
5 W3 M* p3 K3 g' P; I! O! Zif (iedom){; Z6 h1 p5 z6 B/ _! ]0 @. |
cross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee, n! l/ U; X6 {( w
cross_marquee.style.left=marqueewidth+89 _' m% r  \# o" K. r8 \3 B
cross_marquee.innerHTML=marqueecontent
, r+ }' i( K* x6 W0 F& h( u$ sactualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth) g  E# j, d6 ]7 F6 r
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else if (document.layers){/ p0 C2 X& c$ x4 q: h
ns_marquee=document.ns_marquee.document.ns_marquee2
9 Z. N) Q0 V( bns_marquee.left=marqueewidth+8) {7 `3 d; W# Y, B5 c7 a
ns_marquee.document.write(marqueecontent)
6 V: z  Z9 O2 m( jns_marquee.document.close(); u& i" n% P6 }0 l! Y
actualwidth=ns_marquee.document.width
- B5 Y9 g5 P2 P/ l" Z% {7 i" e}
: O' c( ~- C4 \lefttime=setInterval("scrollmarquee()",20)
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window.onload=populate
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* e4 _$ J8 z+ x7 Zfunction scrollmarquee(){* {; P! a" Y4 {; h& M7 s! ?. v
if (iedom){
& ~+ ~( D" {( ?* U- Xif (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))! A. F! q2 D2 G
cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed
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cross_marquee.style.left=marqueewidth+81 M- h5 i; Q0 R. f
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else if (document.layers){( B7 w- {3 ?3 Z6 L% \  |& q9 n# w; ^
if (ns_marquee.left>(actualwidth*(-1)+8))) G" H2 I+ g3 k8 s2 q
ns_marquee.left-=copyspeed( z! l4 x: X2 [: Y$ ?4 \# b
else
& ^$ {  U& `$ sns_marquee.left=marqueewidth+89 V8 k# i# s; A
}
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0 O5 D% g$ B# H. S' Oif (iedom||document.layers){
* C; f0 M% q6 |: N& }1 ewith (document){# N- L" o  d3 z! O* A: l
document.write('<table border="0" cellspacing="0" cellpadding="0"><td>')
$ S$ v6 @6 K2 [5 n: j  {if (iedom){
8 G/ ^4 M( h. F9 c. I1 Z$ Mwrite('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
( @% F$ k# X' y9 q& j' F; Twrite('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
% H1 I2 M6 M1 V; p8 c4 v0 Pwrite('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
9 p/ a! t! r8 l$ J0 R) Mwrite('</div>')
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else if (document.layers){
* ~! Q. Y' l' w* ~- Bwrite('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')
; e: T8 |" H* m( }: j. d! @1 Nwrite('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')- v& }1 C; y! G1 b, N4 o: _
write('</ilayer>')( Y: F2 z5 b3 R
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document.write('</td></table>')* J: j# O% Z# X% {/ |6 k5 s( r" o
}
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</script>