页面图片不停漂浮下落效果-JS特效-爱易网页

页面图片不停漂浮下落效果

日期：2014-05-18　浏览次数：20190 次

以下是程序代码

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="keywords" content="站长,网页特效,js特效,广告代码,zzjs,zzjs.net,sky,www.zzjs.net,站长特效 网" />
<meta name="description" content="www.zzjs.net,站长特效网，站长必备js特效及广告代码。大量高质量js特效，提供高质量广告代码下载,尽在站长特效网" />
<title>页面图片不停漂浮下落效果，sky整理收集，站长特效网欢迎您，zzjs.net</title>
<SCRIPT language=JavaScript>


var no = 6; // snow number
var speed = 12; // smaller number moves the snow faster
var snowflake = "/image/zzjs.ico";
var ns4up = (document.layers) ? 1 : 0;  // browser sniffer
var ie4up = (document.all) ? 1 : 0;
var dx, xp, yp;    // coordinate and position variables
var am, stx, sty;  // amplitude and step variables
var i, doc_width = 400, doc_height = 500;
if (ns4up) {
  doc_width = self.innerWidth;
  doc_height = self.innerHeight;
} else if (ie4up) {
  doc_width = 500;
  doc_height = 500;
}//欢迎来到站长特效网，我们的网址是www.zzjs.net，很好记，zz站长，js就是js特效，本站收集大量高质量js代码，还有许多广告代码下载。
dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();
for (i = 0; i < no; ++ i) {
  dx[i] = 0;                        // set coordinate variables
  xp[i] = Math.random()*(doc_width-50);  // set position variables
  yp[i] = Math.random()*doc_height;
  am[i] = Math.random()*20;         // set amplitude variables
  stx[i] = 0.02 + Math.random()/10; // set step variables
  sty[i] = 0.7 + Math.random();     // set step variables
  if (ns4up) {                      // set layers
    if (i == 0) {
      document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
      document.write("top=\"15\" visibility=\"show\"><img src=\"");
      document.write(snowflake + "\" border=\"0\" onload="return imgzoom(this,600);" onclick="javascript:window.open(this.src);" style="cursor:pointer;"/></layer>");
    } else {
      document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
      document.write("top=\"15\" visibility=\"show\"><img src=\"");
      document.write(snowflake + "\" border=\"0\" onload="return imgzoom(this,600);" onclick="javascript:window.open(this.src);" style="cursor:pointer;"/></layer>");
    }
  } 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;\"><img src=\"");
      document.write(snowflake + "\" border=\"0\" onload="return imgzoom(this,600);" onclick="javascript:window.open(this.src);" style="cursor:pointer;"/></div>");
    } else {
      document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
      document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
      document.write("visible; TOP: 15px; LEFT: 15px;\"><img src=\"");
      document.write(snowflake + "\" border=\"0\" onload="return imgzoom(this,600);" onclick="javascript:window.open(this.src);" style="cursor:pointer;"/></div>");
    }
  }
}
function snowNS() {  // Netscape main animation function
  for (i = 0; i < no; ++ i) {  // iterate for every dot
    yp[i] += sty[i];
    if (yp[i] > doc_height-50) {
      xp[i] = Math.random()*(doc_width-am[i]-30);
      yp[i] = 0;
      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 = yp[i];
    document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]);
  }
  setTimeout("snowNS()", speed);
}
function sno</div></div>

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