// JavaScript Document


 function daysinmonth(lnMonth, lnYear) {
        var dt1, cmn1, cmn2, dtt, lflag, dycnt, lmn
        lmn = lnMonth - 1
        dt1 = new Date(lnYear, lmn, 1)
        cmn1 = dt1.getMonth()
        dtt = dt1.getTime() + 2332800000
        lflag = true
        dycnt = 30
        while (lflag) {
            dtt = dtt + 86400000
            dt1.setTime(dtt)
            cmn2 = dt1.getMonth()
            if (cmn1 != cmn2) {
                lflag = false
            }
            else { dycnt = dycnt + 1 }
        }
        dycnt = dycnt - 2

        if (dycnt > 31) { dycnt = 31 }
        return dycnt;
    }

    function setdays(sobjname, datemode) {

        var dobj = eval(sobjname + "d")
        var mobj = eval(sobjname + "m")
        var yobj = eval(sobjname + "y")
        var hobj = eval(sobjname)

        var monthdays = daysinmonth(mobj.options[mobj.selectedIndex].value, yobj.options[yobj.selectedIndex].value)

        var selectdays = dobj.length - 1

        var curdy = dobj.options[dobj.selectedIndex].value
        if (curdy.length == 1) { curdy = "0" + curdy }
        var curmn = mobj.options[mobj.selectedIndex].value
        if (curmn.length == 1) { curmn = "0" + curmn }
        var curyr = yobj.options[yobj.selectedIndex].value
        if (selectdays > monthdays) {

            for (var dlp = selectdays; dlp > monthdays; dlp--) {
                dobj.options[dlp] = null
            }
        }
        else if (monthdays > selectdays) {
            for (var dlp = selectdays; dlp < monthdays; dlp++) {
                dobj.options[dlp + 1] = new Option(dlp + 1, dlp + 1)
            }
        }
        if (curdy > monthdays) {
            dobj.options[monthdays - 1].selected = true
            curdy = monthdays
        }
        if (datemode == 1) {
            var curdate = curmn + "/" + curdy + "/" + curyr
        }
        else if (datemode == 2) {
            var curdate = curdy + "/" + curmn + "/" + curyr
        }
        else if (datemode == 3) {
            var curdate = curyr + curmn + curdy
        }
        else if (datemode == 4) {
            var cdate = new Date(curyr, curmn - 1, curdy)
            var curdate = cdate.toGMTString()
        }
        hobj.value = curdate;
    }