[mixnet]

так работает

<script type="text/javascript">
$(function() {
    var month = +<?=date('m')?>;
if(month==12)
$('#wntbg').snowfall({round : true, minSize:1, maxSize:4, flakeCount:150, maxSpeed:1});
if(month==01)
$('#wntbg').snowfall({round : true, minSize:1, maxSize:4, flakeCount:150, maxSpeed:1});
if(month==02)
$('#wntbg').snowfall({round : true, minSize:1, maxSize:4, flakeCount:150, maxSpeed:1})
});

</script>