网页特效大全－点击消失的漂浮图片

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点击消失的漂浮图片

加入如下代码到body区域

<script language="javascript1.2">
var Ymax=8; //MAX # OF PIXEL STEPS IN THE "X" DIRECTION
  var Xmax=8; //MAX # OF PIXEL STEPS IN THE "Y" DIRECTION
  var Tmax=10000; //MAX # OF MILLISECONDS BETWEEN PARAMETER CHANGES
var floatimages=new Array();
  floatimages[0]='1.gif';//修改图片地址
  //floatimages[1]='002.gif';//增加图片数目
//*********DO NOT EDIT BELOW***********
  var NS4 = (navigator.appName.indexOf("Netscape")>=0 && parseFloat(navigator.appVersion) >= 4 && parseFloat(navigator.appVersion) < 5)? true : false;
  var IE4 = (document.all)? true : false;
  var NS6 = (parseFloat(navigator.appVersion) >= 5 && navigator.appName.indexOf("Netscape")>=0 )? true: false;
  var wind_w, wind_h, t='', IDs=new Array();
  for(i=0; i<floatimages.length; i++){
  t+=(NS4)?'<layer name="pic'+i+'" visibility="hide" width="10" height="10"><a href="javascript:hidebutterfly()">' : '<div id="pic'+i+'" style="position:absolute; visibility:hidden;width:10px; height:10px"><a href="javascript:hidebutterfly()">';
  t+='<img src="'+floatimages[i]+'" name="p'+i+'" border="0">';
  t+=(NS4)? '</a></layer>':'</a></div>';
  }
  document.write(t);
function moveimage(num){
  if(getidleft(num)+IDs[num].W+IDs[num].Xstep >= wind_w+getscrollx())IDs[num].Xdir=false;
  if(getidleft(num)-IDs[num].Xstep<=getscrollx())IDs[num].Xdir=true;
  if(getidtop(num)+IDs[num].H+IDs[num].Ystep >= wind_h+getscrolly())IDs[num].Ydir=false;
  if(getidtop(num)-IDs[num].Ystep<=getscrolly())IDs[num].Ydir=true;
  moveidby(num, (IDs[num].Xdir)? IDs[num].Xstep : -IDs[num].Xstep , (IDs[num].Ydir)? IDs[num].Ystep: -IDs[num].Ystep);
  }
function getnewprops(num){
  IDs[num].Ydir=Math.floor(Math.random()*2)>0;
  IDs[num].Xdir=Math.floor(Math.random()*2)>0;
  IDs[num].Ystep=Math.ceil(Math.random()*Ymax);
  IDs[num].Xstep=Math.ceil(Math.random()*Xmax)
  setTimeout('getnewprops('+num+')', Math.floor(Math.random()*Tmax));
  }
function getscrollx(){
  if(NS4 || NS6)return window.pageXOffset;
  if(IE4)return document.body.scrollLeft;
  }
function getscrolly(){
  if(NS4 || NS6)return window.pageYOffset;
  if(IE4)return document.body.scrollTop;
  }
function getid(name){
  if(NS4)return document.layers[name];
  if(IE4)return document.all[name];
  if(NS6)return document.getElementById(name);
  }
function moveidto(num,x,y){
  if(NS4)IDs[num].moveTo(x,y);
  if(IE4 || NS6){
  IDs[num].style.left=x+'px';
  IDs[num].style.top=y+'px';
  }}
function getidleft(num){
  if(NS4)return IDs[num].left;
  if(IE4 || NS6)return parseInt(IDs[num].style.left);
  }
function getidtop(num){
  if(NS4)return IDs[num].top;
  if(IE4 || NS6)return parseInt(IDs[num].style.top);
  }
function moveidby(num,dx,dy){
  if(NS4)IDs[num].moveBy(dx, dy);
  if(IE4 || NS6){
  IDs[num].style.left=(getidleft(num)+dx)+'px';
  IDs[num].style.top=(getidtop(num)+dy)+'px';
  }}
function getwindowwidth(){
  if(NS4 || NS6)return window.innerWidth;
  if(IE4)return document.body.clientWidth;
  }
function getwindowheight(){
  if(NS4 || NS6)return window.innerHeight;
  if(IE4)return document.body.clientHeight;
  }
function init(){
  wind_w=getwindowwidth();
  wind_h=getwindowheight();
  for(i=0; i<floatimages.length; i++){
  IDs[i]=getid('pic'+i);
  if(NS4){
  IDs[i].W=IDs[i].document.images["p"+i].width;
  IDs[i].H=IDs[i].document.images["p"+i].height;
  }
  if(NS6 || IE4){
  IDs[i].W=document.images["p"+i].width;
  IDs[i].H=document.images["p"+i].height;
  }
  getnewprops(i);
  moveidto(i , Math.floor(Math.random()*(wind_w-IDs[i].W)), Math.floor(Math.random()*(wind_h-IDs[i].H)));
  if(NS4)IDs[i].visibility = "show";
  if(IE4 || NS6)IDs[i].style.visibility = "visible";
  startfly=setInterval('moveimage('+i+')',Math.floor(Math.random()*100)+100);
  }}
function hidebutterfly(){
  for(i=0; i<floatimages.length; i++){
  if (IE4)
  eval("document.all.pic"+i+".style.visibility='hidden'")
  else if (NS6)
  document.getElementById("pic"+i).style.visibility='hidden'
  else if (NS4)
  eval("document.pic"+i+".visibility='hide'")
  clearInterval(startfly)
  }
  }
  if (NS4||NS6||IE4){
  window.onload=init;
  window.onresize=function(){ wind_w=getwindowwidth(); wind_h=getwindowheight(); }
  }
</script>