function makeStartDay(form) {
var S_YEAR=form.startYear.options[form.startYear.selectedIndex].value;
var S_MONTH=form.startMonth.options[form.startMonth.selectedIndex].value;
var S_daysInMonth=new Date(new Date(S_YEAR,S_MONTH,1)-86400000).getDate();
    for(var i=0; i<form.startDate.length; i++) form.startDate.options[i]=null;

    for(var j=0; j<S_daysInMonth; j++) {
        if(j<9) var k="0"+(j+1); else var k=j+1;
        form.startDate.options[j]=new Option(k);
        form.startDate.options[j].value=k;

    }
}

function makeEndDay(form) {
var E_YEAR=form.endYear.options[form.endYear.selectedIndex].value;
var E_MONTH=form.endMonth.options[form.endMonth.selectedIndex].value;
var E_daysInMonth=new Date(new Date(E_YEAR,E_MONTH,1)-86400000).getDate();
    for(var i=0; i<form.endDate.length; i++) form.endDate.options[i]=null;

    for(var j=0; j<E_daysInMonth; j++) {
        if(j<9) var k="0"+(j+1); else var k=j+1;
        form.endDate.options[j]=new Option(k);
        form.endDate.options[j].value=k;
    }
}

var current=new Date();
var YEAR=current.getFullYear();
var MONTH=current.getMonth()+1;
var daysInMonth=new Date(new Date(YEAR,MONTH,1)-86400000).getDate();