网页之跑马灯文字特效

zw2004

//修改宽度# v6 W, @1 L( X& x% e
var marqueewidth=300$ i8 L' S& _9 p( z  P
//高度3 D! @0 ]  V" q
var marqueeheight=25# N; ]6 t3 C  l3 h$ P# q: i0 k
//速度(1-10), D' k( f( z, m. F
var marqueespeed=35 D) u/ j! h, u; S  A7 V
//背景颜色, O  \  f: p/ ]6 j  A2 K4 X
var marqueebgcolor="#FFFFFF"
8 H  c- u" c2 R4 f: v//是否能暂停 (0=no. 1=yes)?
0 b, Z( w8 {$ T, |3 y+ fvar pauseit=1
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( i. J4 C& k9 r- n//修改显示内容1 x  w# n* j& q: D
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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7 E" z7 K; [6 t# `////下面不需改变////////////& j7 B( N: c& u! n$ n6 R: e7 z
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var copyspeed=marqueespeed3 d) T( {1 j. R  X+ ~+ B) t1 B% F
var pausespeed=(pauseit==0)? copyspeed: 0$ Q6 q5 ^4 R9 o7 q. e; P
var iedom=document.all||document.getElementById+ q  p! ?9 L8 [9 z
if (iedom)
8 S5 M) I" w/ y; w2 F$ Adocument.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')
- ?, e3 j6 L. g# d  p* Uvar actualwidth=''
; @* J5 o7 \0 W  Tvar cross_marquee, ns_marquee7 m0 d( a1 w1 F  X  ^! _8 U

+ c4 F3 e; x0 |9 E- e" v  Tfunction populate(){
) M6 w9 m1 d/ F3 p( ^, T/ ?if (iedom){
, N2 T( z" S* G( M) H4 x' I+ D7 Ocross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
1 T8 |' B, ]  c4 Across_marquee.style.left=marqueewidth+84 J6 S3 u3 c0 |' ^
cross_marquee.innerHTML=marqueecontent
& i  g( a& i$ x& Tactualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth
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else if (document.layers){
4 S' |' x$ }! N8 @& w2 Zns_marquee=document.ns_marquee.document.ns_marquee29 J/ N  \* Z  Z, ?+ l
ns_marquee.left=marqueewidth+8! L8 S4 R. a0 ^/ w! b
ns_marquee.document.write(marqueecontent)- J+ {0 d, ?& b6 y, _
ns_marquee.document.close()' B% r2 t1 Z6 Q3 a' {/ A
actualwidth=ns_marquee.document.width& v" G7 r! y/ \- }8 p
}
+ ]& X2 e: U5 b+ alefttime=setInterval("scrollmarquee()",20): E9 R4 A+ `$ f- P. q5 ?* k
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window.onload=populate
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function scrollmarquee(){6 N' i. H9 l! W0 b# T" U
if (iedom){; L! {, |3 k! i- @# C4 x" v( w
if (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))% [* t7 a# O% i  ?- @
cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed7 l  C* \6 [0 C
else4 w" P4 o/ B2 E9 M- C
cross_marquee.style.left=marqueewidth+8: O* c+ J2 N3 v. I
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else if (document.layers){' j$ D. K7 u& I* X0 A' z( M4 \' w
if (ns_marquee.left>(actualwidth*(-1)+8))& [3 A. l+ G- e& Z1 V: h. A; D% I
ns_marquee.left-=copyspeed
5 ]% B. v3 y* E6 h; P9 u! ^4 Yelse# N/ l1 e9 j  s) ?8 a6 {3 ^
ns_marquee.left=marqueewidth+8
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if (iedom||document.layers){" U7 V! n, f" b3 p6 _' u
with (document){
* o2 y- a7 z7 j- [' ndocument.write('<table border="0" cellspacing="0" cellpadding="0"><td>')/ q% ~7 n  g* q
if (iedom){8 X/ N  B1 t! _* m8 k
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
: H" J" }7 h- Y+ Cwrite('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')2 z; o# ]! l. {* j7 d1 v2 r  u
write('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
& L, e8 f) h  i# f; W0 \write('</div>')
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else if (document.layers){6 Q. x8 ?; y$ A7 `8 g
write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>'), i. d2 N7 L2 u9 B) Y9 t
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')
) _3 y) s' b& A- f+ u& Zwrite('</ilayer>')1 `2 z& u$ `1 J5 i( Y8 U. M
}
- I: G  J- X/ h) j2 u0 n. hdocument.write('</td></table>')# K$ m9 G1 n. Z& {3 H. V6 F
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}
3 T0 i  u. N2 x) |</script>