网页之跑马灯文字特效

zw2004

//修改宽度$ |% m# [+ J' V- Z
var marqueewidth=300
1 F* x1 i; T. [: B! m//高度
' K& u9 H( `" v5 z( q; }var marqueeheight=25
) l: V' q* u- M7 f//速度(1-10)
, R) Y8 j2 w( x) W  D1 Uvar marqueespeed=32 n/ K7 y. [: E/ F
//背景颜色( x5 p* Q, v6 Q- v8 ^7 D# l8 ^: x
var marqueebgcolor="#FFFFFF". A1 G4 x7 N. K/ c8 r4 ^0 r
//是否能暂停 (0=no. 1=yes)?$ Z8 a. U- W  `+ ?4 @2 X3 d9 K
var pauseit=1
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6 u- E5 Z( C7 i. V//修改显示内容" W8 }" Y' q7 {, i9 e0 |" Z
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>'9 `# I5 Z; l7 ~3 Q5 a% n  |

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3 X- W4 @5 h* p& u# X////下面不需改变////////////
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var copyspeed=marqueespeed6 V7 s2 F! C$ M/ E9 j+ S$ [+ Q) Q% n
var pausespeed=(pauseit==0)? copyspeed: 0' @+ `! I: Y# @& i5 p
var iedom=document.all||document.getElementById) M: n8 d- ^  F, R% z% n
if (iedom)& [! B9 b6 O, o
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')/ f6 U+ j' a  ]6 V. Z: L
var actualwidth='', A$ _1 g: K9 E- c% h5 E- G- o
var cross_marquee, ns_marquee
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function populate(){
( s* F: [# M+ P1 Lif (iedom){
( a5 u. L, C6 U9 Ecross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
! Q9 \  X7 C2 X6 K9 g6 c! g7 a+ ccross_marquee.style.left=marqueewidth+8; {7 `0 q& a0 Z+ G8 J1 j
cross_marquee.innerHTML=marqueecontent
: X4 u5 I+ F" U9 b5 V8 w+ lactualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth. D( ^: X" p& O7 ?
}
( {( @* h, F* y! Pelse if (document.layers){6 ~. Y0 r2 x/ W7 c; p
ns_marquee=document.ns_marquee.document.ns_marquee2
8 N: n! _' L4 wns_marquee.left=marqueewidth+8" P2 L2 }5 V1 g' J# W8 s, M& _
ns_marquee.document.write(marqueecontent)
' M2 J" ]4 V7 D% \* Cns_marquee.document.close()4 X; V4 u8 t9 u5 R
actualwidth=ns_marquee.document.width
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0 ^4 [: J$ V3 }, ?, O( Vlefttime=setInterval("scrollmarquee()",20)
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window.onload=populate
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) K  W! V: H) m- I7 U0 @& rfunction scrollmarquee(){
" ~) Y1 A# k5 k8 I, l' yif (iedom){
$ @( @9 l& Q8 s* \  Cif (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))
# i2 T" }, m" d, j8 b# Scross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed& Z9 f0 N8 W  t+ V7 f
else
1 W2 m8 k/ p0 [: Y, w8 S8 Icross_marquee.style.left=marqueewidth+8
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else if (document.layers){7 c* p# Z1 w8 t/ d4 y6 A% l
if (ns_marquee.left>(actualwidth*(-1)+8))8 }/ T3 n8 \- w1 N5 T
ns_marquee.left-=copyspeed
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ns_marquee.left=marqueewidth+8
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if (iedom||document.layers){' I+ P$ ^8 V2 I
with (document){/ \6 x# X' N. B4 Y. t( {
document.write('<table border="0" cellspacing="0" cellpadding="0"><td>')4 t& s/ D# E9 K) r7 m1 i
if (iedom){* D( t; S' |' l( Z
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')) e% Z; @, C7 p# |0 w! y) x
write('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
" D# N% x3 I' p& |$ zwrite('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')! c. B, T. T9 T# C+ k- l( {
write('</div>')
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4 ?, y# N# E; s3 y0 C; f  pelse if (document.layers){+ p1 s: J# t( ?0 h. Z9 h& Q
write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')
) o+ b/ F9 d" h% ewrite('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')
3 }+ ]8 }1 c( @9 |( O/ q' hwrite('</ilayer>')
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document.write('</td></table>')
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4 u% a/ X5 k/ J: v- O% @" e</script>