网页之跑马灯文字特效

zw2004

//修改宽度
, e* F7 }+ M9 J) \# L9 Nvar marqueewidth=300
, ], L; T) p& L+ A" u, C//高度4 O- p! J; Y$ ]5 W
var marqueeheight=258 F$ c% j9 ?6 }4 M
//速度(1-10)
/ a' M% S2 c4 {& L  bvar marqueespeed=3
# B) [6 r9 Z4 f//背景颜色
; \  p0 P& \; evar marqueebgcolor="#FFFFFF"2 D2 M2 ~4 r0 _+ K7 g
//是否能暂停 (0=no. 1=yes)?  f) E! F2 Z% P7 ]# r
var pauseit=1  [: g& ~' x! p& O
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//修改显示内容& w1 V, ^' d0 s0 M; h7 i
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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6 k1 I# G# z* i# G////下面不需改变////////////
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var copyspeed=marqueespeed  W8 v/ R5 ^8 a7 W$ V8 j$ W4 x7 s
var pausespeed=(pauseit==0)? copyspeed: 08 p# p& k2 q6 d. S7 v1 q4 w
var iedom=document.all||document.getElementById$ w3 ~6 f8 n3 K+ C* j
if (iedom)0 r1 Q. {6 X) e9 S& P3 I  S
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')
1 r: G6 K9 H4 I: S, Vvar actualwidth=''
' r. o1 _+ b1 t5 E7 o) Xvar cross_marquee, ns_marquee3 O9 x6 |# F8 Z) X! W+ t

) D6 d$ b$ o' V7 f4 G4 {function populate(){
& L# g3 W3 `% d' T* F$ Eif (iedom){
4 \+ B) q4 g3 u) U2 ~cross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
3 E" U- v4 C. j* t$ A3 E, Ncross_marquee.style.left=marqueewidth+8
0 o3 s# {5 p9 {  l( [  C* g' Z! c0 across_marquee.innerHTML=marqueecontent
$ s3 w3 Z% {2 w% i' `% l% {; lactualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth
5 s1 Y$ X# O+ G7 ~}
& t; m0 \5 a+ v+ }else if (document.layers){
. b) I# ~5 i+ G4 p1 y+ S3 C  X8 Vns_marquee=document.ns_marquee.document.ns_marquee2
' P% ~$ g! C/ x5 ^3 b/ z- ^8 i: _ns_marquee.left=marqueewidth+8& i1 c& U. `* k: p% b
ns_marquee.document.write(marqueecontent)5 u. s$ j) z5 e; e4 j
ns_marquee.document.close()
5 `0 w0 V3 l, `) g: y& Aactualwidth=ns_marquee.document.width
  X. I$ T4 k3 S; f/ h}
- v& Z. s, }7 w2 }lefttime=setInterval("scrollmarquee()",20)
7 Z: V! h4 ~. M: a- B/ _: h}
. b4 a4 H' U+ f! kwindow.onload=populate
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. ]) r: T: s$ {) V/ D5 efunction scrollmarquee(){
0 S) c# d9 ?; gif (iedom){
$ U- A# n, [7 \, o, n7 N: ?if (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))) x. R% v* V) ^
cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed0 y  M# v' `2 s
else* U& B8 s4 S4 |2 h1 @
cross_marquee.style.left=marqueewidth+86 F; ^2 j, m- ]  a0 m
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else if (document.layers){& w, ~' C9 ]& v" z" N1 E) t5 w
if (ns_marquee.left>(actualwidth*(-1)+8))
0 M! x/ Z' s) k& f9 rns_marquee.left-=copyspeed
( }7 v6 j4 {+ X: V) ]else' o; J2 s) C0 ^: ]4 _/ M
ns_marquee.left=marqueewidth+8
& Z3 G# f  o* N" j4 B- ?}
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if (iedom||document.layers){& \8 D, U6 \4 U4 @% n! V
with (document){
; m! q! A3 i+ Q- A* l3 Fdocument.write('<table border="0" cellspacing="0" cellpadding="0"><td>')
% c2 L3 U' q2 C5 Kif (iedom){% B+ J" O# o4 w: x3 _
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
8 u+ O( i; B9 c; t$ {write('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
, D  Z1 J; p% j( }write('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
6 `; a) K8 C. ~1 u; `, o' Vwrite('</div>')7 u' e! P8 p- R4 e/ c
}
0 ~' V5 t: f# F4 E/ Z  gelse if (document.layers){1 G4 v  V) J- d: [: q' W* S
write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')& @, b# W4 I0 ^
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')
6 s: e. m0 h+ |: _- owrite('</ilayer>')0 n8 t- ^4 r+ A! a
}) K( {8 @4 H% {: F; S
document.write('</td></table>')
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/ a9 S* ^) B5 b7 ]7 y. Y</script>