漫天飞舞的雪花的特效代码 dn001 2009-06-21 08:23:00 <!-- http://www.knowsky.com --> <!-- bbs http://www.knowsky.com/bbs--> <!--要完成此效果需要两个步骤 第一步：把如下代码加入到<head>区域中--> <style> <!-- .intro{position:absolute; left:0; top:0; layer-background-color:green; background-color:green; border:0.1px solid green } --> </style> <!--第二步：把如下代码加入到<body>区域中--> <div id="i1" class="intro"></div><div id="i2" class="intro"></div><div id="i3" class="intro"></div><div id="i4" class="intro"></div><div id="i5" class="intro"></div><div id="i6" class="intro"></div><div id="i7" class="intro"></div><div id="i8" class="intro"></div> <SCRIPT language=javascript> <!-- var speed=30 var temp=new Array() var temp2=new Array() if (document.layers){ for (i=1;i<=8;i++){ temp[i]=eval("document.i"+i+".clip") temp2[i]=eval("document.i"+i) temp[i].width=window.innerWidth/8-0.3 temp[i].height=window.innerHeight temp2[i].left=(i-1)*temp[i].width } } else if (document.all){ var clipbottom=document.body.offsetHeight,cliptop=0 for (i=1;i<=8;i++){ temp[i]=eval("document.all.i"+i+".style") temp[i].width=document.body.clientWidth/8 temp[i].height=document.body.offsetHeight temp[i].left=(i-1)*parseInt(temp[i].width) } } function openit(){ window.scrollTo(0,0) if (document.layers){ for (i=1;i<=8;i=i+2) temp[i].bottom-=speed for (i=2;i<=8;i=i+2) temp[i].top+=speed if (temp[2].top>window.innerHeight) clearInterval(stopit) } else if (document.all){ clipbottom-=speed for (i=1;i<=8;i=i+2){ temp[i].clip="rect(0 auto+"+clipbottom+" 0)" } cliptop+=speed for (i=2;i<=8;i=i+2){ temp[i].clip="rect("+cliptop+" auto auto)" } if (clipbottom<=0) clearInterval(stopit) } } function gogo(){ stopit=setInterval("openit()",100) } gogo() --> </SCRIPT>
