34,Q:自动滚动屏幕文字：
  A:
  var position = 0;
  function scrollit()
  {
  if (position != 640 ){
  position++;
  scroll(0,position);
  clearTimeout(timer);
  var timer=setTimeout("scrollit()",25);
  timer;
  }
  }
  以上脚本加在〈Head〉〈/Head〉中间，再在〈BODY〉属性中加 Onload="scrollit()"。
  35,Q:“下雨”JavaScript 脚本：
  A:将以下脚本放在〈Body〉〈/Body〉中间即可：
  <!-- Begin
  var no = 50;
  var speed = 1;
  var ns4up = (document.layers) ? 1 : 0;
  var ie4up = (document.all) ? 1 : 0;
  var s, x, y, sn, cs;
  var a, r, cx, cy;
  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;
  }
  x = new Array();
  y = new Array();
  r = new Array();
  cx = new Array();
  cy = new Array();
  s = 8;
  for (i = 0; i < no; ++ i) {
  initRain();
  if (ns4up) {
  if (i == 0) {
  document.write("<layer name=\"dot"+ i +"\" left=\"1\" ");
  document.write("top=\"1\" visibility=\"show\">");
  document.write(",");
  }
  else {
  document.write("<layer name=\"dot"+ i +"\" left=\"1\" ");
  document.write("top=\"1\" visibility=\"show\">");
  document.write(",");
  }
  }
  else
  if (ie4up) {
  if (i == 0) {
  document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
  document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
  document.write("visible; TOP: 15px; LEFT: 15px;\">");
  document.write(",");
  }
  else {
  document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
  document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
  document.write("visible; TOP: 15px; LEFT: 15px;\">");
  document.write("’"); //设定雨点的字符
  }
  }
  }
  function initRain() {
  a = 6;
  r[i] = 1;
  sn = Math.sin(a);
  cs = Math.cos(a);
  cx[i] = Math.random() * doc_width + 1;
  cy[i] = Math.random() * doc_height + 1;
  x[i] = r[i] * sn + cx[i];
  y[i] = cy[i];
  }
  function makeRain() {
  r[i] = 1;
  cx[i] = Math.random() * doc_width + 1;
  cy[i] = 1;
  x[i] = r[i] * sn + cx[i];
  y[i] = r[i] * cs + cy[i];
  }
  function updateRain() {
  r[i] += s;
  x[i] = r[i] * sn + cx[i];
  y[i] = r[i] * cs + cy[i];
  }
  function raindropNS() {
  for (i = 0; i < no; ++ i) {
  updateRain();
  if ((x[i] = (doc_height - 20))) {
  makeRain();
  doc_width = self.innerWidth;
  doc_height = self.innerHeight;
  }
  document.layers["dot"+i].top = y[i];
  document.layers["dot"+i].left = x[i];
  }
  setTimeout("raindropNS()", speed);
  }
  function raindropIE() {
  for (i = 0; i < no; ++ i) {
  updateRain();
  if ((x[i] = (doc_height - 20))) {
  makeRain();
  doc_width = document.body.clientWidth;
  doc_height = document.body.clientHeight;
  }
  document.all["dot"+i].style.pixelTop = y[i];
  document.all["dot"+i].style.pixelLeft = x[i];
  }
  setTimeout("raindropIE()", speed);
  }
  if (ns4up) {raindropNS(); }
  else
  if (ie4up) {raindropIE(); }
  // End -->
  36,Q:“地震”JavaScript 脚本：
  A:将以下脚本放在〈Body〉〈/Body〉中间即可：
  <!