网页之跑马灯文字特效

zw2004

//修改宽度
0 ]* ^7 v/ e4 O. a4 A9 bvar marqueewidth=300+ T; H1 V4 J, x+ Y
//高度6 n; ^- S. V) P
var marqueeheight=25
% ^2 v' i2 u# C  t$ `+ ]//速度(1-10)
. B' w/ c* z' m8 T: \1 n! X; uvar marqueespeed=3
" i$ Z+ r) x" [9 n# h! Q" C//背景颜色
$ L4 ^) Q. _8 m! X" x( ^var marqueebgcolor="#FFFFFF"0 d1 E2 N+ P0 v
//是否能暂停 (0=no. 1=yes)?
1 i1 ?. Y( N* D$ G. a8 jvar pauseit=16 Y: d: c% ~" O4 o4 X
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//修改显示内容- l6 Z3 n4 G' |# J
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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" Q: f5 [' H" y- D////下面不需改变////////////
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  l0 E9 Z- o* f; \/ c+ i# zvar copyspeed=marqueespeed# P7 W, P# T- q4 j( @
var pausespeed=(pauseit==0)? copyspeed: 0
  t7 ^' G/ j5 U0 C: Fvar iedom=document.all||document.getElementById
  w  i6 d) @. r! d, s4 J' Z+ Mif (iedom)
; `# Z3 J2 h5 x; T/ V* ^document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')( M1 U7 m5 m7 u" I# p3 J+ t0 `
var actualwidth=''
6 R) D! \" r  |- xvar cross_marquee, ns_marquee
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function populate(){1 t+ T' F* X: U5 s! G- c5 q
if (iedom){' D! v6 w4 Z: L. ?! _
cross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee9 N7 `+ z7 G3 u) C% W7 U/ |
cross_marquee.style.left=marqueewidth+8% V( s& }) s0 Z  K* Q
cross_marquee.innerHTML=marqueecontent
( X! S2 g" a/ `actualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth
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else if (document.layers){9 G$ G$ U" g, v
ns_marquee=document.ns_marquee.document.ns_marquee2
; z' D/ \2 T$ s2 Jns_marquee.left=marqueewidth+84 b$ F; J* b( l) a3 w/ e6 x  Z, y
ns_marquee.document.write(marqueecontent)
3 G" Z) H7 W: ?+ ?" i3 Xns_marquee.document.close()
  L/ _2 o2 a( w; Y0 Nactualwidth=ns_marquee.document.width
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lefttime=setInterval("scrollmarquee()",20)4 W& ?, [. f% t. ^
}  {4 u, _: t* h' q: m  O- x
window.onload=populate: a) V9 l& x$ a& U$ W  l
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function scrollmarquee(){
+ t) J! x: Z1 eif (iedom){
) L: s* B/ O/ a3 Aif (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))# {9 V9 Q; E9 I/ K/ |1 t
cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed8 k4 y8 b% @% K* h8 r3 H8 t
else- @) N) E* s* k  m
cross_marquee.style.left=marqueewidth+8
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}
# F, u/ h% F$ R8 helse if (document.layers){
5 F1 I* f( n7 ?% m. q' oif (ns_marquee.left>(actualwidth*(-1)+8))( q: y& N3 `: N$ X
ns_marquee.left-=copyspeed
$ \8 |3 u3 M" \4 X$ ]else
3 M7 [4 K5 A% t7 {ns_marquee.left=marqueewidth+8
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% u4 B' K5 R8 b5 Z5 B+ @if (iedom||document.layers){8 q" l, a* P9 H$ G7 T
with (document){: a: ]$ P* h& d7 H7 n; U
document.write('<table border="0" cellspacing="0" cellpadding="0"><td>')
2 |/ N7 t- y1 U, S$ J# bif (iedom){0 Z+ X3 b+ [9 V( R3 M+ P% s
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')% X' V9 U$ P! T, l% z
write('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
/ V. C$ G8 ~! h6 q- owrite('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
7 t; Z' v' T2 ~( ^! X! Cwrite('</div>')) ~' X3 K: C/ d7 ]* q
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else if (document.layers){7 s9 M5 \2 B; M  F) \) {
write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')0 u8 H- a7 A! B; m5 r( E1 \+ h! F
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>'). L( K+ C% R4 X* }
write('</ilayer>')
' I0 y. \* N2 U" _; Y}
9 w" d% c$ M: n; I2 E6 S& E& Cdocument.write('</td></table>')
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</script>