/*其中的日期字符串可有以下格式：
   格式 1 : 19970529
   格式 2 : 970529
   格式 3 : 29/05/1997
   格式 4 : 29/05/97
   格式 5 : 07-15
   格式 6 : 1997-07-15
   输入参数dateType是1到6的数字，表示使用哪种格式.
*/
function isitToday(dateString,dateType) {
    var now = new Date();
    var today = new Date(now.getYear(),now.getMonth(),now.getDate())

    if (dateType == 1)
        var date = new Date(dateString.substring(0,4),
                            dateString.substring(4,6)-1,
                            dateString.substring(6,8));
    else if (dateType == 2)
        var date = new Date(dateString.substring(0,2),
                            dateString.substring(2,4)-1,
                            dateString.substring(4,6));
    else if (dateType == 3)
        var date = new Date(dateString.substring(6,10),
                            dateString.substring(3,5)-1,
                            dateString.substring(0,2));
    else if (dateType == 4)
        var date = new Date(dateString.substring(6,8),
                            dateString.substring(3,5)-1,
                            dateString.substring(0,2));
    else if (dateType == 5)
        var date = new Date(now.getYear(),
                            dateString.substring(0,2)-1,
                            dateString.substring(3,5));
    else if (dateType == 6)
        var date = new Date(dateString.substring(0,4),
                            dateString.substring(5,7)-1,
                            dateString.substring(8,10));
    else
        return false;
    var d;
    var MinMilli = 1000 * 60;
    var HrMilli = MinMilli * 60;
    var DyMilli = HrMilli * 24;

    d=(today.getTime()/DyMilli)-(date.getTime()/DyMilli);
    if (d<=1 && d>=0)
        return true;
    else
        return false;
}