1月30日加一个月是几月几日？

<script language="vbscript">
date1 = #2008-01-01#
for i=0 to 365
	date2 = DateAdd("d",i,date1)
	document.write(date2 & " ")
	date3 = DateAdd("m",1,date2)
	document.write(date3 & " ")
	document.write("<font color=red>" & DateDiff("d",date2,date3) & "</font><br/>")
next
</script>

<script language="javascript">
var date = new Date(2008,0,1);
for(var i=0;i<=365;i++){
	if(i>0)date = new Date(date.setDate(date.getDate() + 1));
	document.write(date.toLocaleDateString() + " ");
	var date1 = new Date(date.getTime());
	var date2 = new Date(date1.setMonth(date1.getMonth() + 1));
	document.write(date2.toLocaleDateString() + " ");
	document.write("<font color=red>" + (date2.getTime() - date.getTime())/1000/60/60/24 + "</font><br/>");
}
</script>