网页之跑马灯文字特效

zw2004

//修改宽度' U7 F3 ?3 n* n. e8 \& }* Q9 }
var marqueewidth=300
. h: x) c0 E) h3 R//高度
1 q0 v+ K  Z" ?- R6 A- S) X1 Ivar marqueeheight=25( `0 U* \8 D. l  S7 {8 c3 ^
//速度(1-10)
! {  o( J) M$ Z. K- Fvar marqueespeed=31 L: V3 j/ k: c+ ?. ]9 K& s  z3 S
//背景颜色
. j+ @2 q- W/ ~' T% m: ^var marqueebgcolor="#FFFFFF"- J! K8 P/ X- F  e( b5 _! ~4 t) ^% X
//是否能暂停 (0=no. 1=yes)?
8 H0 B* n4 E/ b: v* Ivar pauseit=1
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//修改显示内容
4 F8 g1 C! m- I& svar 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>'1 E2 o) f6 p5 ^5 {4 o

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, k" N7 O& k) S5 ^: x" M  q: l" H////下面不需改变////////////
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var copyspeed=marqueespeed9 E, P+ u& J# W+ q
var pausespeed=(pauseit==0)? copyspeed: 0
  _+ y* v% q* a* e  Pvar iedom=document.all||document.getElementById
& U5 a1 W6 n7 Q) c1 f( v* [* tif (iedom)& [' H. w& I5 o, s! G5 y7 K3 Z
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')% {2 g8 b: i: L: q+ Z' P# }
var actualwidth=''
. @; p/ j  }' ^- A6 t4 Vvar cross_marquee, ns_marquee* d  t  O+ \; P  a4 V( J

8 G, R: k  l- Q+ f, _% Z  `' E* Mfunction populate(){
& w& `3 Z; F- `if (iedom){
2 e5 @' a0 d7 O$ }+ @' I" e. Ecross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee
7 b- W( S! @, T5 Rcross_marquee.style.left=marqueewidth+8$ o& \' I4 M: x" z% g3 m0 r  J
cross_marquee.innerHTML=marqueecontent% d& Z$ T, O7 a. V3 B. Y
actualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth) d3 Y; S6 k; A- ?
}. N1 E3 Q) Y& J$ e8 y5 B- w
else if (document.layers){
" p2 r- K4 `6 v4 j5 l& tns_marquee=document.ns_marquee.document.ns_marquee2
: g9 d2 i+ a/ R: Lns_marquee.left=marqueewidth+8
7 W. U3 ~/ z8 fns_marquee.document.write(marqueecontent)) O% {0 |( p; F
ns_marquee.document.close()0 T! B, |( j* j8 ~4 c, c
actualwidth=ns_marquee.document.width  X! [3 H) R! M- _! B1 p
}; i5 v) p" B* R; n
lefttime=setInterval("scrollmarquee()",20)
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window.onload=populate, ~: w" X  v# L

* B& m* ^9 |, K8 P& g- ~function scrollmarquee(){0 a" @# c6 z2 y3 c
if (iedom){4 [) f- x2 V( {
if (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))
) w6 D8 C8 g3 Icross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed4 e" r) Y% _' M3 W- b- r
else6 H+ [* l, I' I; z$ Q. \. Y
cross_marquee.style.left=marqueewidth+89 {' I$ u2 K* U2 e9 C" X6 s
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else if (document.layers){0 p+ q4 T# P! m+ Q/ Y# g6 t+ i' k
if (ns_marquee.left>(actualwidth*(-1)+8))
7 G4 B1 z; l" ?ns_marquee.left-=copyspeed
0 N/ f8 ]/ q! n% b+ [else! J. T6 ~7 D- `4 S- W
ns_marquee.left=marqueewidth+8
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' i1 K1 Z& Q8 g) G- Aif (iedom||document.layers){
% J% k3 L2 u" swith (document){
/ n- f2 C7 y" h/ _! idocument.write('<table border="0" cellspacing="0" cellpadding="0"><td>')
3 B& Q! u9 l1 O( |: oif (iedom){5 [+ I0 V6 ^: Z% O5 u
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
+ f' ^7 K( E  }  M8 w  Hwrite('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
/ U$ U/ e$ Q4 h# f2 K& n  G6 U+ A! {5 Wwrite('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
7 w. r8 }9 N- c. u. V) C% n+ Wwrite('</div>')9 V% g9 T' [* G$ Q
}) c9 Y( E3 \/ o! Y3 O# I9 C
else if (document.layers){0 }  i( L- z9 V+ k* Z1 @
write('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')8 U0 n. j2 w: u% P) R
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')! E2 |- t) v5 W0 u
write('</ilayer>')* @1 \8 f/ x4 r# B
}
4 w! ?! F2 P) ^7 H& h1 Odocument.write('</td></table>')/ Z' P: c  |' D% B3 ?+ N8 J4 a
}
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# R/ H3 L2 y; r* ^</script>