比较两个时间大小方法

<script>
var begin_date="2003-3-18 15:05:47";
var end_date="2003-3-18 23:59:59";

function checkDateTime(date1,date2)

{
     return Date.parse(date1.replace(/-/g,"/"))>Date.parse(date2.replace(/-/g,"/"));
}
alert(checkDateTime(begin_date,end_date));
</script>