<SCRIPT LANGUAGE="JavaScript">
date1=new Date("2002/1/1")
date2=new Date("2002/1/2")
alert(Date.parse(date1)<Date.parse(date2))
</script>
date1=new Date("2002/1/1")
date2=new Date("2002/1/2")
alert(Date.parse(date1)<Date.parse(date2))
</script>
http://expert.csdn.net/Expert/topic/1514/1514368.xml?temp=.2483942