页面花瓣效果

<script Language="javascript">
<!--
function a(x,y,color)            
{document.write("<img border='0' style='position: absolute; left: "+(x+300)+"; top: "+(y+200)+";background-color: "+color+"' src='px.gif' width=2 height=2>")}
//-->
</script>
<script Language="javascript">
<!--
for(t=1;t<=360;t++){        
lo=150*Math.sin(2*(Math.PI/180)*t);
x = lo*Math.cos((Math.PI/180)*t);
y = lo*Math.sin((Math.PI/180)*t);
a(x,y,"#ff0000");

lo=150*Math.cos(2*(Math.PI/180)*t);
x = lo*Math.cos((Math.PI/180)*t);
y = lo*Math.sin((Math.PI/180)*t);
a(x,y,"#00ffff");
}
//-->
</script>