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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;
top:0;$s2o_n!z
visibility:hide; Hd8rEbiA
visibility:hidden;a;D~)LwW4[U `
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</style>y WuD:hC
<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='';'FORnXjUp*Y:v
)X2yfZ}N/qOAyr
var BallSpeed = 20;
var contentWidth;
var contentHeight;
var maxBallSpeed = 50;

var xMax;
var yMax;
var xPos = 0;$^9B7`t0@#n)^#^@2if
var yPos = 0;[,yy;c]%Io(uP#Q
var xDir = 'right';
var yDir = 'down';
var superballRunning = true;
var tempBallSpeed;
var currentBallSrc;
var newXDir;Z+{D$Zb!zf
var newYDir;

function initializeBall() {
if (document.all) {
   xMax = document.body.clientWidth
   yMax = document.body.clientHeight
   document.all("supertext").style.visibility = "visible";
   contentWidth=supertext.offsetWidthTJ*D*E+y
   contentHeight=supertext.offsetHeight
   }
else if (document.layers) {
   xMax = window.innerWidth;0@O/ow nY
   yMax = window.innerHeight;
   contentWidth=document.supertext.document.width
   contentHeight=document.supertext.document.height!kL(o-mh0TJV
   document.layers["supertext"].visibility = "show";
   }
setTimeout('moveBall()',400); M)j;wP#U,lF
if (hidetimer!='')S6m+L-T K I-l
setTimeout("hidetext()",hidetimer)
}

function moveBall() {
if (superballRunning == true) {
   calculatePosition();nM%u(^/`~
   if (document.all) {Vtfb&fj O
      document.all("supertext").style.left = xPos + document.body.scrollLeft;}}sWD0F
      document.all("supertext").style.top = yPos + document.body.scrollTop;
      }
   else if (document.layers) {
      document.layers["supertext"].left = xPos + pageXOffset;J'rH%SPge6k!G-M
      document.layers["supertext"].top = yPos + pageYOffset;
      }#^PKWOy+e
   animatetext=setTimeout('moveBall()',20);
   }
}!dmN/\V i&qmL

function calculatePosition() {{-]GfH3Cy
if (xDir == "right") {+o"]@6mR? pe.X
   if (xPos > (xMax - contentWidth - BallSpeed)) {Q2\%N)rN3vc4]+g
      xDir = "left";$B3Dc;?yJEj
      }.i0^x&F6S#~
   }
else if (xDir == "left") {tV&eB g b6JH
   if (xPos < (0 + BallSpeed)) {
      xDir = "right";O@'q\7r-h.m`
      }
   }
if (yDir == "down") {4M)\L}1d0}E
   if (yPos > (yMax - contentHeight - BallSpeed)) {Fc"nF-YS6U&Q;D#z;c
      yDir = "up";&Gp5o wIU'nv;A
      }
   }#e j C"m$[*kzm
else if (yDir == "up") {
   if (yPos < (0 + BallSpeed)) {
      yDir = "down";
      }
   }
if (xDir == "right") {n;h2@"iq7o/KL
   xPos = xPos + BallSpeed;*^q+ce5[K*fi
   }
else if (xDir == "left") { q#P3C8Jz1uD
   xPos = xPos - BallSpeed;
   }P&Dcm R|Y*[
else {
   xPos = xPos;
   }4K7h*ypS L7T-rr
if (yDir == "down") {5]rv-Yb0h^E*[*{
   yPos = yPos + BallSpeed;jw3WX!cL[Ql#OX
   },[(CV!f5W
else if (yDir == "up") {"q g _jY2i3\v
   yPos = yPos - BallSpeed;
   } x D$\ R`kJM
else {_"K*kA GA
   yPos = yPos;
   }
}

function hidetext(){ _ a}l~
if (document.all)
supertext.style.visibility="hidden"
else if (document.layers)
document.supertext.visibility="hide"
clearTimeout(animatetext)
}@.T/I[ j3~'S(z}y

if (document.all||document.layers){9KyZJ ^
document.write('<span id="supertext"><nobr>'+thecontent+'</nobr></span>')
window.onload = initializeBall;O#WJiRw6R5h
window.onresize = new Function("window.location.reload()");
}Wz?w)W;\8ew p
$A ` C+kL5ED
</script>

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