<script language="javascript">
    var src="张三,李四,王五,赵六,钱七,孙八,曾久"
    var srcArray=src.split(",")
    var beginDate=new Date(2008,3,26)
    var nowdate=new Date()
    var diff=Math.floor((nowdate-beginDate)/(86400000*7))
    diff=diff%srcArray.length
    var nextDiff=(diff+parseInt(1))%srcArray.length
    var nowWeek=srcArray[diff]
    var nextWeek=srcArray[nextDiff]
    alert("本周值班："+nowWeek+";下周值班："+nextWeek)
</script>