网页之跑马灯文字特效

zw2004

//修改宽度2 c: I4 t9 d9 f: c2 s
var marqueewidth=300" N4 i4 l: I. T! E7 e. q4 Z+ b
//高度
1 x' w/ ~6 X9 n/ P- l0 k; b  \var marqueeheight=25
  r: a7 e8 W& n2 z2 k//速度(1-10)* y+ M6 Y, O% i% q1 R7 @; ?
var marqueespeed=3
% A, [+ A9 Q. J% T1 k8 W' }//背景颜色
# D7 g7 X: z& E. ]5 u6 Z/ \var marqueebgcolor="#FFFFFF"
" V/ j8 v* D2 v4 s. r//是否能暂停 (0=no. 1=yes)?4 J% [% q( v- v! i; e" b
var pauseit=1
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! |- O: A- R$ }, i7 G2 k6 Q//修改显示内容
+ Y- B2 B; J  x, w5 t# y. u. zvar 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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$ K3 j+ N. I, H5 b; `////下面不需改变////////////9 V; c/ U, |+ r: z" y: n( f) o8 Y

' H/ H2 R0 d3 gvar copyspeed=marqueespeed
4 W! z* Q0 ^9 O) uvar pausespeed=(pauseit==0)? copyspeed: 04 H8 |. t9 Z+ D$ x  e
var iedom=document.all||document.getElementById
6 c4 D+ j+ ^& U# v6 @) P& j! fif (iedom)
* Y" e5 F0 M: H  O  v: I% W( d5 Rdocument.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')
: D4 ~, Y" h. z0 j3 z  `! Zvar actualwidth=''- v1 `1 C; \, E, i, G1 V
var cross_marquee, ns_marquee1 m! V  I3 ]  O( u5 p. |2 w. \: d
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function populate(){% n* |& h+ ~. C2 F6 I
if (iedom){
7 z; x/ c; }% g. P: K1 L1 Jcross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
+ w" O8 c6 G/ pcross_marquee.style.left=marqueewidth+8# k6 z1 ~: W4 r
cross_marquee.innerHTML=marqueecontent
# D- @) d' X8 X$ C7 t9 C! K' Bactualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth
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% R1 f; K( y, `- `$ V8 L1 K0 Kelse if (document.layers){
0 t& ~( j+ F( K  ]  @7 m" dns_marquee=document.ns_marquee.document.ns_marquee2
8 z' ^' K0 N8 v$ g2 z" J1 c, Wns_marquee.left=marqueewidth+8% }+ X- \% c( M
ns_marquee.document.write(marqueecontent)/ K  R" p1 [) F7 T
ns_marquee.document.close()7 [! ]  \9 I0 w4 n5 I3 n
actualwidth=ns_marquee.document.width
6 V/ d! O2 g  U3 j}
6 K. d+ r9 S6 G# T8 Dlefttime=setInterval("scrollmarquee()",20)1 B) m3 j6 n; Q8 x
}
  m5 Q& |" L# U: M$ `window.onload=populate' e4 ^& m+ P8 Z7 E4 z6 M
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function scrollmarquee(){
# Y& q' a* I3 d+ B/ Sif (iedom){
& ^; p$ E! e8 X9 D: a/ p8 lif (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))
  U. x  \9 r- Z1 O2 \cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed
3 Y! q  B/ I9 j$ X5 u5 m; uelse) L4 x& R: `4 x+ i# [. M
cross_marquee.style.left=marqueewidth+8
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}; e  C2 E$ L6 R* {- p0 f
else if (document.layers){; s: S: G. V2 u
if (ns_marquee.left>(actualwidth*(-1)+8))$ a, c2 H3 c4 ]' y: t2 o9 @
ns_marquee.left-=copyspeed& ^2 e' x9 u# e  {) q
else: D+ P) S& H' i( |
ns_marquee.left=marqueewidth+8
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/ q+ X/ J' `  y4 j7 Mif (iedom||document.layers){5 a# z: K& b# p4 H7 d6 Q, t. _
with (document){  ]4 K6 k* v5 F2 m: z) O$ P
document.write('<table border="0" cellspacing="0" cellpadding="0"><td>')
* d- E+ |1 Y  N4 ?. M2 p1 `' Tif (iedom){2 d% M& b- R7 s1 D! s
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
' B- b# |- {7 M0 e* `7 |$ c& |write('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
  Z1 t* e, V0 w; m- p+ `write('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
: @4 L$ n' z" P& ]  Lwrite('</div>')
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else if (document.layers){3 B( V! k# t  s9 O$ f- a1 f
write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')' c4 n5 _2 q/ a; y5 s/ K0 R0 h4 l% ]
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')
! S2 O) {5 J6 ]write('</ilayer>')- J# b. _; G5 X2 q
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document.write('</td></table>')
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</script>