网页之跑马灯文字特效

zw2004

//修改宽度
( h7 Y/ L0 |$ e# ]  Gvar marqueewidth=300
' ~- A1 L: t2 }/ Y' v) j- b//高度
8 b& I" X2 _0 tvar marqueeheight=25
0 O% F8 G/ G# s2 Q//速度(1-10)3 C( l% [" j% ^
var marqueespeed=3$ P' v! {' M+ n  u. A
//背景颜色
" [- S, ]4 b( Y' |3 C+ Hvar marqueebgcolor="#FFFFFF": B, d$ M* q  s# ?3 ~
//是否能暂停 (0=no. 1=yes)?
/ O6 z9 [4 \1 b; J6 r! o' pvar pauseit=1! I) V& s6 i+ Y; K5 A

- E& b& K6 s8 q, i7 R* W//修改显示内容" c- o; F* h% T, J4 \! C
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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////下面不需改变////////////: N* a7 ?% J' Y" L4 G6 H9 c
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var copyspeed=marqueespeed
. {. x9 y. i1 t" e! ?6 B$ P) Ovar pausespeed=(pauseit==0)? copyspeed: 0
, s  C3 z6 g6 Y/ c0 `! t, ^var iedom=document.all||document.getElementById' r) S2 X" g1 ^. a- X
if (iedom)
$ O# r, g$ I% S3 y/ E" F' Vdocument.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>'): g( z. [! \. F
var actualwidth=''
; [, H8 I' F' Y! O: w% y& l0 f3 V& evar cross_marquee, ns_marquee' n- g; V6 Y; B6 b. Y

. \, t: U; ]2 X9 c& dfunction populate(){
9 f' U' w. r- bif (iedom){
- L" `! J; _( d( n5 _7 @- c; pcross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
) n$ F6 e" a* r+ Ecross_marquee.style.left=marqueewidth+8$ p4 r1 \7 ]# u
cross_marquee.innerHTML=marqueecontent1 y* B- h, s- Z& w
actualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth% c. A8 ]! V2 |* G7 V9 s- S  V
}
5 L+ W( @$ M2 c8 ~* {else if (document.layers){
5 o% u) S- l$ i+ F$ a0 y; uns_marquee=document.ns_marquee.document.ns_marquee2
+ C4 O) A8 R. S6 Z  h0 ^9 D7 m. x; n: cns_marquee.left=marqueewidth+80 f$ [4 e5 e& J1 o9 f1 w5 Z& J
ns_marquee.document.write(marqueecontent)9 v+ S6 i! V: ]6 i" i$ l
ns_marquee.document.close()) U( \/ S2 p; E- e' K/ o% L
actualwidth=ns_marquee.document.width* ?5 t8 Z( n/ U; [8 \' `# q
}
; Q) y9 M/ N- o9 g% ~lefttime=setInterval("scrollmarquee()",20)( T: c  T8 c1 q: Y* z
}9 Q* A' z, c& c$ q7 O9 _
window.onload=populate7 x6 H0 e! l) t' K7 k
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function scrollmarquee(){2 M" r. @7 N) t. y( b- C. Q
if (iedom){
3 s% e5 {7 t$ F6 D% `3 n# C" M' Yif (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))
: [& l* u. W6 H8 b9 ]cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed9 q! u& z& x) u1 f$ `
else
- U( U/ s* U7 s" lcross_marquee.style.left=marqueewidth+8
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else if (document.layers){
. X) t) r' {. Q9 }& @! R7 i4 Fif (ns_marquee.left>(actualwidth*(-1)+8))
+ l3 l& T4 I' O. @$ B  ^. {ns_marquee.left-=copyspeed
5 p8 G! l% P; c( h4 D' u" C* F+ celse. W) @  T8 p- ~4 a
ns_marquee.left=marqueewidth+82 l! h' @$ n9 Q" I) T
}
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. t0 E: q. T) q5 N% F& K8 yif (iedom||document.layers){# V5 a5 b; s; N( I. \9 b
with (document){+ `, T0 h% I, c4 E
document.write('<table border="0" cellspacing="0" cellpadding="0"><td>')9 _; g, `; q1 V/ T! _. A
if (iedom){
+ x+ U: a6 N  d' Xwrite('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">'), e/ U2 D3 g0 E9 c4 A7 k5 \0 f
write('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
" e: f" q- r1 n/ L# _write('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
  E3 I- ~& _$ a7 I2 G! H- h8 Iwrite('</div>')
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else if (document.layers){
/ S. {# W! D0 f  z1 {2 Y- F3 iwrite('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')0 l6 x# A) Z& F6 I/ [4 i
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')$ ^7 M2 W; ~  Q: Y1 _8 m! h4 a
write('</ilayer>')
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document.write('</td></table>')
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}
3 K% j" R- {' x6 x( A- T) J8 b</script>