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捌玖网络工作室 » 网页编程 » 网页之不断弹射的文字-特效

zw2004 发表于 2008-1-21 20:55

网页之不断弹射的文字-特效

<style type="text/css">
#supertext {
position:absolute;
left:0;#Vb"`B+ZL)t
top:0; uNkPd r0_
visibility:hide;
visibility:hidden;
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</style>
<script language="JavaScript1.2">
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var thecontent='<h2><font size="2" face="宋体" color="FF0000">欢迎光临七色风网页家园</font></h2>'
var hidetimer='';

var BallSpeed = 20;
var contentWidth;9c2|Hz/X+H
var contentHeight;
var maxBallSpeed = 50;1o6e{4Rv
h:l:V;G6nr.}i(Zo

var xMax;
var yMax;3^!m `k[f+a Et3R
var xPos = 0;Rn"Unuq:p:x
var yPos = 0;
var xDir = 'right';A;wkK ns
var yDir = 'down';c1K _yo*{,Yo?:{
var superballRunning = true; Y"d:d)S"e
var tempBallSpeed;m S3cIkr
var currentBallSrc;
var newXDir;
var newYDir;$d8tS;Wb"p

function initializeBall() {KD*T5j@l&Ij9E
if (document.all) {FdUuG&{y/QG e
   xMax = document.body.clientWidth
   yMax = document.body.clientHeight
   document.all("supertext").style.visibility = "visible";7o e w r o Gr
   contentWidth=supertext.offsetWidth0]L x5VL2uR`v-e
   contentHeight=supertext.offsetHeight
   }
else if (document.layers) {
   xMax = window.innerWidth;+Z*}"k#K%D6?^
   yMax = window.innerHeight;
   contentWidth=document.supertext.document.width2Z5\nNP4@)^
   contentHeight=document.supertext.document.height
   document.layers["supertext"].visibility = "show";
   }
setTimeout('moveBall()',400);
if (hidetimer!='')!}u"x.i#O5|'R])G
setTimeout("hidetext()",hidetimer)5r!Lj:fp#f.VZ
}

function moveBall() {
if (superballRunning == true) {)nP0zP;pLu(w)B~7H
   calculatePosition();$ax,K qx
   if (document.all) {GZu['q8[i&c8h
      document.all("supertext").style.left = xPos + document.body.scrollLeft;m\/V&Va&d
      document.all("supertext").style.top = yPos + document.body.scrollTop;
      }-d3}|a^-o'^:Z
   else if (document.layers) {Hy[L[@mC
      document.layers["supertext"].left = xPos + pageXOffset; ])f0^ i2o7XX
      document.layers["supertext"].top = yPos + pageYOffset;
      }
   animatetext=setTimeout('moveBall()',20); u0z%w{f4r0C3Xp
   }
}

function calculatePosition() {
if (xDir == "right") {
   if (xPos > (xMax - contentWidth - BallSpeed)) {8j D^F4];Il
      xDir = "left";
      }
   } cpw7lmpw
else if (xDir == "left") {
   if (xPos < (0 + BallSpeed)) {
      xDir = "right";;z/b-t/i'Q:Y Hg4Y
      }%W!H6dS s)C%t
   }
if (yDir == "down") {
   if (yPos > (yMax - contentHeight - BallSpeed)) {
      yDir = "up"; RI&p9z pafzt\E
      }
   }
else if (yDir == "up") {&Q2w j,J y&Tv!tw8E8kX
   if (yPos < (0 + BallSpeed)) {
      yDir = "down";
      }%dD$_i3tvQ
   }EmI E4O[!`Hl
if (xDir == "right") {oD0N,B%}0^D+{*d
   xPos = xPos + BallSpeed;
   }*tr#]'byC*F xOE$C
else if (xDir == "left") {
   xPos = xPos - BallSpeed;
   }tOZ.jj
else {-h;jc.\Uw0jmyI
   xPos = xPos;
   }@*OL{N N&I%}9?
if (yDir == "down") {
   yPos = yPos + BallSpeed;/|&Ujiq7D
   }D3vwaW/C
else if (yDir == "up") {~{tW-h-[\G v
   yPos = yPos - BallSpeed;&oQAKq(Z\
   }
else {"nK;b-_ I$I;}+Z)h#f
   yPos = yPos;pNu:u7KbZ6UI
   }
}
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function hidetext(){
if (document.all)
supertext.style.visibility="hidden"
else if (document.layers)@1B\U'J}_p
document.supertext.visibility="hide"
clearTimeout(animatetext)
}H7M$LC.O8o%NB

if (document.all||document.layers){ `zmA:[9s
document.write('<span id="supertext"><nobr>'+thecontent+'</nobr></span>')
window.onload = initializeBall;
window.onresize = new Function("window.location.reload()");+Zs#uM5|Ih
}&P2Ak FO+r.Y#uP;t

</script>

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