//今日の日付
var today=new Date();

var s0101 = new Date(today.getFullYear(),0,1);
var e0228 = new Date(today.getFullYear(),1,29);

var s = new Date(today.getFullYear(),8,1);
var e = new Date(today.getFullYear(),8,31);

var myHTML_s0101e0228="<p class=img><a href=campaign/otosidama.php><img src=common/img/sd_20110101.jpg border=0></a></p>";
var myHTML_se="<p class=img><a href=http://www.ndpc.jp target=_blank><img src=http://www.bee-ms.com/images/nailsdesignphotocontest2011.jpg border=0></a></p>";


if(today.getTime()>= s0101.getTime() && today.getTime() <e0228.getTime() ){
document.write(myHTML_s0101e0228);

}
if(today.getTime()>= s.getTime() && today.getTime() <e.getTime() ){
document.write(myHTML_se);

}