网络时空 | 网页特效

特效说明

两只蝴蝶在网页中飞来飞去，他们都很娇嫩的哟，千万不要点他们，否则……

特

效

代

码

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;
}

@_⌒ 特效预览 @_⌒

看到了吗？叫你不要点你偏要点，这不……都是你惹的祸！
　