<script>
function day_setCookie( adname, advalue, expiredays ){
var todayday = new Date();
todayday.setDate( todayday.getDate() + expiredays );
document.cookie = adname + "=" + escape( advalue ) + "; path=/; expires=" + todayday.toGMTString() + ";"
}

function imgFreeWeek(no) {
document.getElementById('dc_imgFree_'+no).style.display = "none";
day_setCookie("imgFreeWeek", "done1" , 1 );
}

</script>