网页之跑马灯文字特效

zw2004

//修改宽度
. X1 n$ e1 v" yvar marqueewidth=300  F, Z7 l; P( M- O5 l' f0 g( C
//高度
# V! X# S) C6 @% o3 K+ U/ gvar marqueeheight=25
1 p; W9 F. e: x6 z) F//速度(1-10); T/ B, }8 B/ l2 z& w
var marqueespeed=3% N/ C3 l  y; b* X1 Y
//背景颜色$ n- C% R: y, ^  E/ u8 c2 t# [" r
var marqueebgcolor="#FFFFFF"
7 s* M7 q4 U6 g$ B; }4 S//是否能暂停 (0=no. 1=yes)?
6 {/ c9 i# Y3 k  e) R2 K0 mvar pauseit=19 h5 C# c/ v. T/ F/ q

. c* G' ?# ?' l2 S0 f+ [; q( m//修改显示内容
: v5 B  L! y, B# {& Mvar 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////////////# j: v% t' x& A3 m
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var copyspeed=marqueespeed
0 M+ C4 W3 J3 Q9 Jvar pausespeed=(pauseit==0)? copyspeed: 0& l" k; B- v$ P( v% H* x
var iedom=document.all||document.getElementById
+ t: Q$ B1 ^; m* j8 H& B+ a) Oif (iedom)/ c/ c$ E7 ~2 ^0 o0 Z& S
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')
- A1 ?# z5 q! u( @4 |$ ?0 E/ r8 Fvar actualwidth=''- _& A. |! }7 y
var cross_marquee, ns_marquee
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function populate(){# G' ~1 \" m$ U4 A% y
if (iedom){5 L0 i, I0 U* a) C
cross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
& X. a9 t& Z$ e' a$ P( Q; Ocross_marquee.style.left=marqueewidth+83 b2 O& N8 p1 k  I& q
cross_marquee.innerHTML=marqueecontent- \" r* `! Z* u8 U' R+ `
actualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth
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else if (document.layers){! [1 O9 R4 r% r
ns_marquee=document.ns_marquee.document.ns_marquee2
# U" ?7 i- C+ Y5 j( V: u) Uns_marquee.left=marqueewidth+8$ @7 i; g9 {3 S$ s. _, e2 T
ns_marquee.document.write(marqueecontent)
. v  M& h; z$ y" \! Sns_marquee.document.close()& R/ n, I5 J* W. u
actualwidth=ns_marquee.document.width
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lefttime=setInterval("scrollmarquee()",20)
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window.onload=populate
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function scrollmarquee(){
# p9 u5 {  i4 R7 kif (iedom){
  R; [. c$ X) U" S! s5 Rif (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))5 Y  o6 p/ c5 Y$ Q) v4 D7 F
cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed7 J6 [4 q/ x  t
else
' K6 m  o5 }$ Z* W9 o/ M- `, ecross_marquee.style.left=marqueewidth+8/ N' G7 P+ ~! ]- Y

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else if (document.layers){- L9 |4 }* ?1 I4 g7 A& {
if (ns_marquee.left>(actualwidth*(-1)+8))( B& e4 }; `' X$ g( d" {! ?( V
ns_marquee.left-=copyspeed
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ns_marquee.left=marqueewidth+8
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if (iedom||document.layers){& [% p* d3 f4 j$ g; r( C" R6 ^
with (document){
% o9 ]- b2 w; s/ f8 Ldocument.write('<table border="0" cellspacing="0" cellpadding="0"><td>')
+ ^1 @+ m9 S4 X! F' v! kif (iedom){
* E4 D3 s. o0 k% Q: r" Vwrite('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')3 C; B7 `/ D  }4 c' c1 z% C! V" ~
write('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
  G/ v6 p0 H8 J! k& \# z1 ewrite('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
: H: v; p: w( i2 L3 s% I: L' Xwrite('</div>')
! l+ G+ L0 I& O, c) E' q" J1 Y/ L}
# y1 S+ `1 E8 u2 a+ ^3 a# w* relse if (document.layers){
. p' Q# o5 b# y6 J3 ~write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')
& P+ u7 Y: [) s* Ywrite('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')) ?' N$ ]# q+ X
write('</ilayer>')
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document.write('</td></table>')1 q" r1 I; J- A; L4 h
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</script>