<script type="text/javascript"><!--
css=new Array("001.css","002.css","003.css","004.css"); //cssファイル(数だけ順番に切り替わる)
//----------------------------------------------------------
set = new Date().getHours();
var n;
switch (set) {
case 1: case 2: case 3: case 4: case 5: case 6:
n=0;
break;
case 7: case 8: case 9: case 10: case 11: case 12:
n=1;
break;
case 13: case 14: case 15: case 16: case 17: case 18:
n=2
break;
default:
n=3;
break;
}
document.write("<link rel='stylesheet' type='text/css' href="+css[n]+">");
//--></script>