两日期比较大小

获取当前时间：
function getNowFormatDate() {
    var date = new Date();
    var seperator1 = "-";
    var seperator2 = ":";
    var month = date.getMonth() + 1;
    var strDate = date.getDate();
    if (month >= 1 && month <= 9) {
        month = "0" + month;
    }
    if (strDate >= 0 && strDate <= 9) {
        strDate = "0" + strDate;
    }
    var currentdate = date.getFullYear() + seperator1 + month + seperator1 + strDate
        + " " + date.getHours() + seperator2 + date.getMinutes()
        + seperator2 + date.getSeconds();
    return currentdate;
}
比较xxxx-xx-xx xx:xx:xx
function CompareDate(d1,d2)
{
    return ((new Date(d1.replace(/-/g,"\/"))) > (new Date(d2.replace(/-/g,"\/"))));
}
if(CompareDate(st_datetime,nowtime)==false){
    alert("视频时间已过期！");
    return false;
}

比较xxxx-xx-xx
var date1 = st_datetime.replace(/-/g, "/");
var date2 = nowtime.replace(/-/g, "/");
var d1 = new Date(date1);
var d2 = new Date(date2);

if((parseInt(Date.parse(d1)) - parseInt(Date.parse(d2)))<0){
    alert("图文时间已过期！");
    return false;
}