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漂亮的鱼 游来游去..代码

 小明 2006-09-25
CODE:
<body>
<script>
<!--
var no = 7;
  var speed = 10;
  snow = new Array();
  snow[0] = "http://gainover./0.gif";
  snow[1] = "http://gainover./1.gif";
  snow[2] = "http://gainover./2.gif";
  snow[3] = "http://gainover./3.gif";
  snow[4] = "http://gainover./4.gif";
  snow[5] = "http://gainover./5.gif";
  snow[6] = "http://gainover./6.gif";
  var maxsize = 74;
var ns4up = (document.layers) ? 1 : 0;
  var ie4up = (document.all) ? 1 : 0;
  var dx, xp, yp;
  var am, stx, sty;
  var i, doc_width = 800, doc_height = 600;
if (ns4up) {
  doc_width = self.innerWidth;
  doc_height = self.innerHeight;
  } else if (ie4up) {
  doc_width = document.body.clientWidth;
  doc_height = document.body.clientHeight;
  }
dx = new Array();
  xp = new Array();
  yp = new Array();
  am = new Array();
  stx = new Array();
  sty = new Array();
  var j = 0;
for (i = 0; i < no; ++ i) {
  dx[i] = 0;
  xp[i] = Math.random()*(doc_height-maxsize);
  yp[i] = Math.random()*(doc_width-maxsize);
  am[i] = Math.random()*10;
  stx[i] = 0.02 + Math.random()/10;
  sty[i] = 0.7 + Math.random();
if (ns4up) {
  if (i == 0) {
  document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src=\"" + snow[j] + "\" border=\"0\"></layer>");
  } else {
  document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src=\"" + snow[j] + "\" border=\"0\"></layer>");
  }
  } else if (ie4up) {
  if (i == 0) {
  document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px; width:1;\"><img src=\"" + snow[j] + "\" border=\"0\"></div>");
  } else {
  document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px; width:1;\"><img src=\"" + snow[j] + "\" border=\"0\"></div>");
  }
  }
  if (j == (snow.length-1)) { j = 0; } else { j += 1; }
  }
document.write("<div id=\"damy\" style=\"POSITION: absolute; width:1; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: " + (doc_width+maxsize) + "px;\"> </div>");
function snowNS() {
  for (i = 0; i < no; ++ i) {
  if (i%2) {
  yp[i] += sty[i];
  if (yp[i] > doc_width) {
  xp[i] = Math.random()*(doc_height-am[i]-maxsize);
  yp[i] = 0-maxsize;
  stx[i] = 0.02 + Math.random()/10;
  sty[i] = 0.7 + Math.random();
  doc_width = self.innerWidth;
  doc_height = self.innerHeight;
  }
  } else {
  yp[i] -= sty[i];
  if (yp[i] < -maxsize) {
  xp[i] = Math.random()*(doc_height-am[i]-maxsize);
  yp[i] = doc_width;
  stx[i] = 0.02 + Math.random()/10;
  sty[i] = 0.7 + Math.random();
  doc_width = self.innerWidth;
  doc_height = self.innerHeight;
  }
  }
  dx[i] += stx[i];
  document.layers["dot"+i].top = xp[i] + am[i]*Math.sin(dx[i]);
  document.layers["dot"+i].left = yp[i];
  }
  setTimeout("snowNS()", speed);
  }
function snowIE() {
  for (i = 0; i < no; ++ i) {
  if (i%2) {
  yp[i] += sty[i];
  if (yp[i] > doc_width) {
  xp[i] = Math.random()*(doc_height-am[i]-maxsize);
  yp[i] = 0-maxsize;
  stx[i] = 0.02 + Math.random()/10;
  sty[i] = 0.7 + Math.random();
  doc_width = document.body.clientWidth;
  doc_height = document.body.clientHeight;
  }
  } else {
  yp[i] -= sty[i];
  if (yp[i] < -maxsize) {
  xp[i] = Math.random()*(doc_height-am[i]-maxsize);
  yp[i] = doc_width;
  stx[i] = 0.02 + Math.random()/10;
  sty[i] = 0.7 + Math.random();
  doc_width = document.body.clientWidth;
  doc_height = document.body.clientHeight;
  }
  }
  dx[i] += stx[i];
  document.all["dot"+i].style.pixelTop = xp[i] + am[i]*Math.sin(dx[i]);
  document.all["dot"+i].style.pixelLeft = yp[i];
  }
  setTimeout("snowIE()", speed);
  }
if (ns4up) {
  snowNS();
  } else if (ie4up) {
  snowIE();
  }
//-->
</SCRIPT>

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