网页之跑马灯文字特效

zw2004

//修改宽度, @  E# X6 ]: E6 A. [$ \7 Q) v
var marqueewidth=300
! A$ n5 [3 d+ N7 p9 o2 j: H+ w. O//高度/ `& ^0 U5 @$ S
var marqueeheight=25( P( A% g9 n. E, r. a) ]
//速度(1-10)# ?# t8 G. i3 a$ c4 u
var marqueespeed=3, y- Z9 E6 k$ E, h- g, P- R
//背景颜色& G. q) P; D; U$ q) [
var marqueebgcolor="#FFFFFF". x( ]# w/ t7 ?0 g: e2 _
//是否能暂停 (0=no. 1=yes)?, C% ?7 x: v( j; i8 N& ^
var pauseit=1
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% J' X4 L4 Y7 D* ~//修改显示内容
7 `- r$ D; a2 O- S6 gvar 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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6 e/ t6 F4 o# S) R9 k////下面不需改变////////////
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0 }7 ?6 @8 \9 S( f1 F  Nvar copyspeed=marqueespeed3 P% @1 x8 i; Q) n: m6 x( h
var pausespeed=(pauseit==0)? copyspeed: 00 D& {! X* c+ R% I, d- h& W
var iedom=document.all||document.getElementById5 }- K$ N4 Y  n1 M2 g  y
if (iedom)" K  v9 R) a- q. v- c9 ^& j
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')% p; r  `6 N# G) d% m! b0 E
var actualwidth=''" x. V/ S" H, U* V6 P% T$ m
var cross_marquee, ns_marquee
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/ ?( ]4 N) }7 M; Sfunction populate(){
  q3 e8 m( C) O* bif (iedom){( A/ E7 ], h, i( H' _2 h
cross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee$ `0 M. u% f0 r( B) }
cross_marquee.style.left=marqueewidth+8
" E6 X6 Q3 U# u; d8 X7 fcross_marquee.innerHTML=marqueecontent
1 r% w; i! o' J/ wactualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth9 z7 h2 x5 r7 H! \/ u
}
: A; V9 }/ Y' {4 E7 h& A9 }5 a2 C  Belse if (document.layers){" x0 [. g; Q" l
ns_marquee=document.ns_marquee.document.ns_marquee2
: j- i' A2 T8 H+ ~7 F7 ^8 Yns_marquee.left=marqueewidth+8
3 u  Z! ^+ I) X4 G+ ?5 @/ j$ ins_marquee.document.write(marqueecontent)+ N+ a" X% \# s# t& u8 F
ns_marquee.document.close(). l$ c) H) y/ I( E2 o& q7 r* t
actualwidth=ns_marquee.document.width! g/ K! p* s5 M+ D% E' P5 K" _
}
( [- u1 A* z- L& U/ tlefttime=setInterval("scrollmarquee()",20)
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window.onload=populate
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+ w0 ^; {  P. r$ Ufunction scrollmarquee(){
: M3 F; H; [2 eif (iedom){
9 J  B0 c  _& E3 E: M, H( iif (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))
: J  h. y5 r. u! M% Wcross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed, C, z1 k% B2 E: N
else6 B' Y2 X; {% ?; W4 C0 a5 r4 k5 c
cross_marquee.style.left=marqueewidth+8
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else if (document.layers){
! V  o+ j0 A4 K# ^" Oif (ns_marquee.left>(actualwidth*(-1)+8))
0 l* k, Y* Z% @. N% y* h: Vns_marquee.left-=copyspeed
' I/ C) B: A+ S5 z& F- B& zelse9 c% v1 _- Q: b7 r
ns_marquee.left=marqueewidth+8+ ~: e9 W- x, W- T+ r4 W
}
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/ P7 o* p) Y4 bif (iedom||document.layers){: P7 l& {/ l! `3 q8 T- X( O
with (document){& p+ c. |& P( m# X9 @, j
document.write('<table border="0" cellspacing="0" cellpadding="0"><td>')* w% j" D+ Z, Z3 K9 N
if (iedom){# p( q+ G( J. j. u
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
4 O+ s7 d: r& Q3 z: Y0 qwrite('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')4 y9 P6 N. v) F: d" u6 i: b/ p' G
write('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
. J/ H+ h1 }5 e& G2 h& ~5 q# d0 Qwrite('</div>')
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else if (document.layers){! g$ j6 z' h: @- I
write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')
1 C: D; k% f- W% P6 E. V% iwrite('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')8 ^, Q! j' V" E3 U1 p: @
write('</ilayer>')
+ {6 A5 O1 F4 N8 V, M}
- f& V2 F0 Q& s) r" n5 Z2 Odocument.write('</td></table>')) C1 }4 k. {5 d7 n# h" [: q
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</script>