永远停留在右上端的字

网页特效

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msg="--创意是网页设计的核心--欢迎光临水晶情缘--";
msgColor="0000ff";
msgFont="Verdana";
file:
msg=msg.split('');
n=msg.length; 
e=360/n;
yp=0;
xp=0;
yb=40;
xb=60;
sa=0.07;
sb=0;
pa=new Array();
pb=new Array();
for (i=0; i < n; i++){
document.write('<div id="logo" style="position:absolute;top:0;left:0;'
+'height:30;width:30;font-family:'+msgFont+';text-align:center;color:'+msgColor+'">'+msg[i]+'</div>');
}
function ani(){
yp=document.body.scrollTop+50;
xp=document.body.scrollLeft+window.document.body.clientWidth-100;
for (i=0; i < n; i++){
logo[i].style.top =yp+yb*Math.sin(sb+i*e*Math.PI/180);
logo[i].style.left=xp+xb*Math.cos(sb+i*e*Math.PI/180);
pb[i]=logo[i].style.pixelTop-yp;
pa[i]=pb[i]-pb[i]*2;
if (pa[i] < 1){
pa[i]=0;
logo[i].style.visibility='hidden';
}
else logo[i].style.visibility='visible';
logo[i].style.fontSize=pa[i]/2.7;
}
sb-=sa;
setTimeout('ani()',100);
}
window.onload=ani;
}
// -->
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