网页之跑马灯文字特效

zw2004

//修改宽度1 P& w! O+ v! S4 ^2 @# C
var marqueewidth=300) b! X0 u) z1 r$ f
//高度
' G4 f$ t* G3 T* t# u3 j) L+ Avar marqueeheight=25
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var marqueespeed=33 J' D* y( [: D* b, w8 k
//背景颜色
  B; k( J) n( o7 i. a( g: e4 }var marqueebgcolor="#FFFFFF"
: P/ q0 e. v! ~8 c, ~2 T1 _" ~//是否能暂停 (0=no. 1=yes)?0 t  e- b# u6 d# K' N4 N( P
var pauseit=1- w: r) G" A7 P; Z4 y. C; c
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//修改显示内容. M( [/ ^% H9 h: J" x  Y
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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" R; f" d9 Y/ M0 ~4 Y2 X  N( l( n////下面不需改变////////////
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var copyspeed=marqueespeed
0 m5 N5 U, z2 G7 ~var pausespeed=(pauseit==0)? copyspeed: 0& M* |' d6 h* c! @) h+ |
var iedom=document.all||document.getElementById: o% X4 N7 ?9 W0 \1 G' O/ L) L
if (iedom)6 i; Q# a& w1 F$ Y( x# V
document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-1000">'+marqueecontent+'</span>')
( j! F  r+ l! p2 ?' f+ N6 S) Jvar actualwidth=''" f( I  c8 B2 W
var cross_marquee, ns_marquee: F# `3 v6 J8 t' x; e0 ~
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function populate(){
( q; v. P5 [* M7 w5 {  N0 \if (iedom){
  f( ~, K8 [( x, H- S( E) }5 qcross_marquee=document.getElementById? document.getElementById("iemarquee") : document.all.iemarquee8 q5 S1 m( T6 c0 h1 ]
cross_marquee.style.left=marqueewidth+8, }' U8 r0 o2 H% m
cross_marquee.innerHTML=marqueecontent
: h* Q0 b6 q0 H. |/ _actualwidth=document.all? cross_marquee.offsetWidth : document.getElementById("temp").offsetWidth
/ v/ u* v# D% d! u}
' i6 J7 L. X5 s/ w+ ?" r$ belse if (document.layers){
2 z) L% W( e! \' l& i8 |6 ins_marquee=document.ns_marquee.document.ns_marquee2
2 M2 r  P$ A  @. ons_marquee.left=marqueewidth+87 |0 O7 p& S, o, n- c4 F# i
ns_marquee.document.write(marqueecontent)* V9 i5 r: j, j
ns_marquee.document.close()6 W' G) R4 w6 F! c
actualwidth=ns_marquee.document.width& S: a, B- y, c( K4 V; M- \# h) O* A; X
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lefttime=setInterval("scrollmarquee()",20), E! p" X% d, v- U% c
}
2 U( N( K$ ^" o9 u9 w1 Uwindow.onload=populate
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function scrollmarquee(){
5 u- W4 m: H. P1 O$ z: d5 tif (iedom){
. X7 _/ s" e% @, B1 T8 rif (parseInt(cross_marquee.style.left)>(actualwidth*(-1)+8))/ Z/ t) t9 O3 [( G5 F+ B
cross_marquee.style.left=parseInt(cross_marquee.style.left)-copyspeed
$ `1 T, V& `8 I% E$ k3 \else
9 N4 A. _0 ^" v) Qcross_marquee.style.left=marqueewidth+8& c+ f& r& l3 E5 ~; Q3 u

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" [9 F8 K5 F2 z9 o1 m0 @. melse if (document.layers){
, Q1 P8 j* n7 u& d* Y# V% ?if (ns_marquee.left>(actualwidth*(-1)+8))5 X2 b. L3 ^6 g8 _3 _9 l
ns_marquee.left-=copyspeed7 @9 x: _5 S1 U
else: Z. i& E1 C4 D2 o7 Z
ns_marquee.left=marqueewidth+86 H1 c3 a. h6 y2 D
}
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7 `$ a$ C8 C3 J% @' N/ cif (iedom||document.layers){
+ s+ M0 I6 s- M0 f( i" s  A7 _with (document){
# r% f  W. K4 Z* a2 I4 Pdocument.write('<table border="0" cellspacing="0" cellpadding="0"><td>')
9 ]: f/ P/ u5 j. {. E' g  z+ e2 K% B3 x# tif (iedom){; l5 t9 E0 y$ K; ~* a$ v2 f2 I
write('<div style="position:relative;width:'+marqueewidth+';height:'+marqueeheight+';overflow:hidden">')
! z# s; }1 X- x- N4 v* hwrite('<div style="position:absolute;width:'+marqueewidth+';height:'+marqueeheight+';background-color:'+marqueebgcolor+'" onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed">')
9 Q2 I$ u. g: @3 y4 r/ bwrite('<div id="iemarquee" style="position:absolute;left:0;top:0"></div>')
0 `) E2 M2 r- Q7 x5 i8 i, d' O! j3 g' pwrite('</div>')1 W6 h+ Z9 a6 N, |* ^* z9 f; A
}, _" V# b9 G/ w& o9 i
else if (document.layers){
3 N( J4 |0 \- {- C0 E2 Pwrite('<ilayer width='+marqueewidth+' height='+marqueeheight+' name="ns_marquee" bgColor='+marqueebgcolor+'>')* L  l' ^3 W/ G0 c: a- P2 u+ N
write('<layer name="ns_marquee2" left=0 top=0 onMouseover="copyspeed=pausespeed" onMouseout="copyspeed=marqueespeed"></layer>')
/ g" a4 f. Y. y+ B; [$ @write('</ilayer>')2 \. t5 X2 c3 Q$ Z/ U& `/ y! d4 v
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document.write('</td></table>')
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