boardad.js

LyBBS基于Struts1.3/Ajax的架构

  brOK=navigator.javaEnabled()?true:false;
  ns4=(document.layers)?true:false;
  ie4=(document.all)?true:false;
  if(mvtLight.substring(mvtLight.lastIndexOf(".")+1,mvtLength)=="swf") {
    document.write("<div id='mvt' style='position:absolute; width:40; height:60; z-index:9;'><object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0' width="+mvtWidth+" height="+mvtHeight+"><param name=movie value='"+mvtLight+"'><param name=quality value=high></object></div>");
  }
  else {
    document.write("<div id='mvt' style='position:absolute; width:40; height:60; z-index:9; filter: Alpha(Opacity=90)'>");
    if(mvtLink!="")
      document.write("<a href="+mvtLink+" target=_blank><img src='"+mvtLight+"' onmouseover=stopme('mvt') onmouseout=movechip('mvt') border=0 width="+mvtWidth+" height="+mvtHeight+"></a></div>");
    else
      document.write("<img src='"+mvtLight+"' onmouseover=stopme('mvt') onmouseout=movechip('mvt') border=0 width="+mvtWidth+" height="+mvtHeight+"></div>");
  }
  var vmin=4;
  var vmax=10;
  var vr=4;
  var timer1;
  function Chip(chipname,width,height){
    this.named=chipname;
    this.vx=vmin+vmax*Math.random();
    this.vy=vmin+vmax*Math.random();
    this.w=width;
    this.h=height;
    this.xx=0;
    this.yy=0;
    this.timer1=null;
  }
  function movechip(chipname) {
    if(brOK) {
      eval("chip="+chipname);
      if(ns4) {
        pageX=window.pageXOffset;
        pageW=window.innerWidth;
        pageY=window.pageYOffset;
        pageH=window.innerHeight;
      }
      else {
        pageX=window.document.body.scrollLeft;
        pageW=window.document.body.offsetWidth-8;
        pageY=window.document.body.scrollTop;
        pageH=window.document.body.offsetHeight;
      }
      chip.xx=chip.xx+chip.vx;
      chip.yy=chip.yy+chip.vy;
      chip.vx+=vr*(Math.random()-0.5);
      chip.vy+=vr*(Math.random()-0.5);
      if(chip.vx>(vmax+vmin))
	chip.vx=(vmax+vmin)*2-chip.vx;
      if(chip.vx<(-vmax-vmin))
        chip.vx=(-vmax-vmin)*2-chip.vx;
      if(chip.vy>(vmax+vmin))
	chip.vy=(vmax+vmin)*2-chip.vy;
      if(chip.vy<(-vmax-vmin))
        chip.vy=(-vmax-vmin)*2-chip.vy;
      if(chip.xx<=pageX) {
        chip.xx=pageX;
        chip.vx=vmin+vmax*Math.random();
      }
      if(chip.xx>=pageX+pageW-chip.w) {
        chip.xx=pageX+pageW-chip.w;
        chip.vx=-vmin-vmax*Math.random();
      }
      if(chip.yy<=pageY) {
        chip.yy=pageY;
        chip.vy=vmin+vmax*Math.random();
      }
      if(chip.yy>=pageY+pageH-chip.h) {
        chip.yy=pageY+pageH-chip.h;
        chip.vy=-vmin-vmax*Math.random();
      }
      if(ns4) {
        eval('document.'+chip.named+'.top ='+chip.yy);
        eval('document.'+chip.named+'.left='+chip.xx);
      }
      else {
        eval('document.all.'+chip.named+'.style.pixelLeft='+chip.xx);
        eval('document.all.'+chip.named+'.style.pixelTop ='+chip.yy);
      }
      chip.timer1=setTimeout("movechip('"+chip.named+"')",100);
    }
  }
  function stopme(chipname) {
    if(brOK) {
      eval("chip="+chipname);
      if(chip.timer1!=null) {
        clearTimeout(chip.timer1)
      }
    }
  }
  var mvt;
  function mvt() {
    mvt=new Chip("mvt",60,80);
    if(brOK) {
      movechip("mvt");
    }
  }
  if(mvtLight!="")
    window.onload=mvt