网页之跑马灯文字特效

zw2004

//修改宽度( o2 n1 p( u6 p
var marqueewidth=300$ I' b: K7 I: n% k
//高度
% d+ X; W/ j! N9 G3 _4 Dvar marqueeheight=25
1 l5 L0 ?, O) D' w6 t% N" W* ~3 {//速度(1-10)
: T) B2 H2 d- [( {, H) N! U6 k6 f  U/ xvar marqueespeed=36 k( }1 |  B+ q3 S6 [
//背景颜色
& v1 {1 |$ g+ q9 y  b0 B+ Lvar marqueebgcolor="#FFFFFF"
6 J1 Y. d& l/ w" u& m% w0 s9 D//是否能暂停 (0=no. 1=yes)?
; F, o8 d5 N! V4 s! ?var pauseit=1
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# A8 t& T4 K) g  q; W2 V//修改显示内容) b1 x+ w' s& B. Q7 e
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>'! H* }/ C$ s% q1 r# A# P, {( }4 t
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1 Z9 ~) @$ _; d# a. _7 _5 L5 D2 I/ x////下面不需改变////////////" t' p0 M% F. y6 s$ t7 a* h, j4 ~/ d  W
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var copyspeed=marqueespeed* ]- V# ?6 J4 ]) }/ {
var pausespeed=(pauseit==0)? copyspeed: 0
9 x/ x6 ]7 I( k. s! avar iedom=document.all||document.getElementById
5 X6 O: |3 i$ y. T0 y" Y2 `if (iedom); `, O+ L7 x/ J9 y
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')
% |4 F9 F1 o) lvar actualwidth=''+ t$ O" C. C7 n
var cross_marquee, ns_marquee
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function populate(){! u9 n6 b$ l/ N1 A
if (iedom){3 _; i7 s9 X7 _- g  ^# h, T
cross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
3 d+ \6 H) |+ g2 W8 F9 ycross_marquee.style.left=marqueewidth+8/ P- E$ k; b6 j9 ~0 z1 b( ~
cross_marquee.innerHTML=marqueecontent
0 |* [$ ?: N' i1 D  wactualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth" X2 n  `0 T+ Q6 o+ [1 _
}! Z* q2 z# V; j- t
else if (document.layers){4 F; }! ]. z0 j! X
ns_marquee=document.ns_marquee.document.ns_marquee20 L* s  _: F1 x/ ?+ J3 w7 B2 s
ns_marquee.left=marqueewidth+8
5 w. |1 c0 S* t" Fns_marquee.document.write(marqueecontent)* r) S+ o' Y- R: m' e) d
ns_marquee.document.close()# `7 w+ J7 B# `, b' P
actualwidth=ns_marquee.document.width
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* c' f1 k& m8 Ilefttime=setInterval("scrollmarquee()",20)7 E, Y  x# R4 c1 M
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window.onload=populate
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" M+ K: @( f' m* [5 bfunction scrollmarquee(){
3 F+ |2 ^$ z' G, Qif (iedom){9 _8 I- @& C5 X1 x$ p
if (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))
* m# i  l3 ~& ~; S) e% Vcross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed( _5 E" {1 q3 }+ K8 U8 j" z: p
else) Q" ?* R$ I8 ~; M6 E. p; A
cross_marquee.style.left=marqueewidth+8
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else if (document.layers){
% R6 b) f4 ~8 tif (ns_marquee.left>(actualwidth*(-1)+8))6 H! e3 K- w- u$ w. _$ f% h
ns_marquee.left-=copyspeed! Y- j( j  I, P. q' V9 Y& Y
else
" t( E9 e/ [' J$ r1 ins_marquee.left=marqueewidth+8
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}+ b( G+ |2 S) V1 a
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if (iedom||document.layers){$ |" |# Y7 ?! ?) B' n) q
with (document){: a/ r* ^" y, l4 P" \, l
document.write('<table border="0" cellspacing="0" cellpadding="0"><td>')6 w( H8 o0 ]  b2 N; F- [' `& o
if (iedom){* T$ N, r! t0 X& x) U
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
: `' J& O0 d. v  J$ h8 Bwrite('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')+ n( O* V- h8 G, V3 A& D( ]
write('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')- T% j+ f( |/ K
write('</div>')
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! E2 E1 @0 H# o& K7 u2 T2 W6 g- Uelse if (document.layers){" R! h! J; S$ k# ~6 G, }
write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')( K: u. ]1 Z; U) }$ Z. T
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')- ^2 k& w# i4 m; O: E9 F8 `
write('</ilayer>')
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document.write('</td></table>')! m; o5 q, R6 |+ U! n
}
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/ k4 P, d$ n* y% F' W</script>