网页之跑马灯文字特效

zw2004

//修改宽度
3 K5 a, a% `7 M, c- K( ~; B  ivar marqueewidth=300( ?" H4 c, F! k4 ?; O, z* q$ w3 R  i
//高度# m* P: D, B# W" c7 B- K) l
var marqueeheight=25( u, f. w! V' T6 B8 D& ~& X7 U
//速度(1-10)) [% c- o. S* m3 Q5 b2 P: t
var marqueespeed=3$ g" x3 Q) c: K. ^
//背景颜色) S' z  ]1 o* @" n) s7 s7 T
var marqueebgcolor="#FFFFFF"
0 ^; u6 R) U! h0 T//是否能暂停 (0=no. 1=yes)?' _3 _1 w( S2 k% x
var pauseit=1
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//修改显示内容, i7 Y! D! y4 Y+ M7 l# l/ R
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>'; Y& Q9 d0 _$ s

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% [' _$ Y2 v" ~" `////下面不需改变////////////
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var copyspeed=marqueespeed
& T$ X0 _' i. Q7 h& V* S3 i# b8 Y9 Jvar pausespeed=(pauseit==0)? copyspeed: 0
# ~5 w& ~/ N, v/ M8 O: G8 Pvar iedom=document.all||document.getElementById* O, G4 D: h- o! y! u- t/ y7 m( n
if (iedom)6 v* C9 l4 {% {, A4 f- Q# ]
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')
  z/ [8 G6 C" q: g, e2 ?" Yvar actualwidth=''
. U+ F  ?2 G* b/ O* E2 evar cross_marquee, ns_marquee& K! A% r: }: H. |+ a% T7 @* F5 B
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function populate(){9 k* u9 P- @* J0 y2 R: }
if (iedom){
- {8 l' d" z4 v: Ycross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee7 e0 @7 _1 |5 h4 C3 Z% l5 ]( y
cross_marquee.style.left=marqueewidth+8/ E$ r) F! q+ w* D( j
cross_marquee.innerHTML=marqueecontent
$ [# D% J) B+ d2 factualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth5 q! ]' i  M& ~4 f- Y
}
0 q( L$ q0 ^# R1 U. Telse if (document.layers){" W' f8 h' c2 i9 P
ns_marquee=document.ns_marquee.document.ns_marquee21 t0 I$ H: D( p7 q8 N
ns_marquee.left=marqueewidth+81 W0 u1 M3 `4 A
ns_marquee.document.write(marqueecontent)2 m. P; a/ f6 E7 B
ns_marquee.document.close()
9 y" v4 k' {* V! ~: R8 e: ~actualwidth=ns_marquee.document.width0 E3 w, d) g- _, q$ e( M
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lefttime=setInterval("scrollmarquee()",20)
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! g2 Q& _, J2 ^& kwindow.onload=populate9 i# L: ^5 Q" k8 z# ^4 Q9 I, g& Z

. E8 X& z$ L6 q# b: O# Gfunction scrollmarquee(){3 ]. C- k' a1 X6 L' R! x
if (iedom){
% ^# u* }3 h$ _  j# l4 w$ i- @if (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))
' Q, x& _: W! e9 h( h7 z3 a) vcross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed* C1 {& B" e! E
else8 I# ^1 ^: ]! r8 k) q9 X) o
cross_marquee.style.left=marqueewidth+8
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else if (document.layers){
8 U, Y/ o: X' B$ l0 ]if (ns_marquee.left>(actualwidth*(-1)+8)); v7 p& ^* _6 R2 l" P. N
ns_marquee.left-=copyspeed
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ns_marquee.left=marqueewidth+8
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if (iedom||document.layers){/ H. [; D7 m3 m# H! K( Y( {+ j
with (document){; h& @) y) y0 r& Q( J+ _
document.write('<table border="0" cellspacing="0" cellpadding="0"><td>')1 w4 I% m% v' h5 r
if (iedom){
* K6 n  Y& z! G$ Z" F6 v' ?write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
& n  G9 H: l6 T& K3 j" f+ ^0 Bwrite('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
$ `' o% Y9 e, Y* Swrite('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')( ~9 O2 n, ]$ ^
write('</div>')9 S- H5 b9 j. B* H6 f3 f) W( r
}
- [( M1 J/ k  Y* `& [0 telse if (document.layers){
$ c. T( E  T2 w" Cwrite('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')
2 j) I6 u5 m* I8 k- G2 o: Pwrite('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')7 I$ U8 i0 Z& ^) U: o/ _5 c
write('</ilayer>')
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document.write('</td></table>')! i" {- Z, f9 R1 H+ n
}
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* H! T! p7 R. X- R' I' C</script>