var today = new Date(new Date().valueOf());

function setDates()
{
  // This will populate the date dropdowns with today and tomarrow's values.
  theForm = document.mainForm;
  var yearOffset = parseInt(theForm.inyear.options[0].value,10);
  // getDate
  var tomorrow = new Date(new Date().valueOf() + (24*60*60*1000));
  var inMonth=tomorrow.getMonth();
  var inDay=tomorrow.getDate();
  var inYear=y2k(tomorrow.getYear());

  if(isLeapYear(inYear)) { var days = new Array(31,29,31,30,31,30,31,31,30,31,30,31); }
  else { var days = new Array(31,28,31,30,31,30,31,31,30,31,30,31); }

  outMonth=inMonth;
  outDay = inDay%days[inMonth];
  outYear=inYear;
  if(outDay == 0) { outMonth = (inMonth + 1) % 12; }
  if(outDay == 0 && inMonth == 11) { outYear++; }

  // Now set the select boxes to the appropriate dates:
  theForm.inmonth.options[inMonth].selected=true;
  theForm.inday.options[(inDay-1)].selected=true;
  theForm.inyear.options[(inYear-yearOffset)].selected=true;
  theForm.outmonth.options[outMonth].selected=true;
  theForm.outday.options[outDay].selected=true;
  theForm.outyear.options[(outYear-yearOffset)].selected=true;
}
// quadYear
function y2k(number){return (number < 1000) ? number + 1900 : number;}

function isLeapYear(yr)
{
  if (((yr % 4 == 0) && (yr % 100 != 0)) || (yr % 400 == 0)) { return true; }
  else { return false; } 
}

function changeDates()
{
  theForm = document.mainForm;
  var yearOffset = parseInt(theForm.inyear.options[0].value,10);
  var inMonth=parseInt(theForm.inmonth.options[theForm.inmonth.selectedIndex].value,10)-1;
  var inYear=parseInt(theForm.inyear.options[theForm.inyear.selectedIndex].value,10);
  var baseMonth=today.getMonth();
  var baseDay=today.getDate();
  var baseYear=y2k(today.getYear());
  
  if(isLeapYear(inYear)) { var days = new Array(31,29,31,30,31,30,31,31,30,31,30,31); }
  else { var days = new Array(31,28,31,30,31,30,31,31,30,31,30,31); }

  var inDay=parseInt(theForm.inday.options[theForm.inday.selectedIndex].value,10);
  
  if(inDay >= days[inMonth]) { inDay = days[inMonth]; }
  else { inDay = inDay%days[inMonth]; }
  theForm.inday.options[inDay-1].selected=true;

/* This is causing problems with some people
  if((inMonth < baseMonth) || (inMonth == baseMonth && inDay < baseDay))
  {
    theForm.inyear.options[((baseYear-yearOffset)+1)].selected=true;
    inYear = baseYear+1;
  }
*/
  var currOutMonth = parseInt(theForm.outmonth.options[theForm.outmonth.selectedIndex].value,10)-1;
  var currOutDay = parseInt(theForm.outday.options[theForm.outday.selectedIndex].value,10);
  var currOutYear = parseInt(theForm.outyear.options[theForm.outyear.selectedIndex].value,10);
  
  if((currOutYear < inYear) || (currOutYear == inYear && currOutMonth < inMonth) ||
    (currOutYear == inYear && currOutMonth == inMonth && currOutDay <= inDay))
  {
    outMonth=inMonth;
    outDay = inDay%days[inMonth];
    outYear=inYear;
    if(outDay == 0) { outMonth = (inMonth + 1) % 12; }
    if(outDay == 0 && inMonth == 11) { outYear++; }
  
    theForm.outmonth.options[outMonth].selected=true;
    theForm.outday.options[outDay].selected=true;
    theForm.outyear.options[(outYear-yearOffset)].selected=true;
  }
}

function checkOutDate()
{
  theForm = document.mainForm;
  var yearOffset = parseInt(theForm.inyear.options[0].value,10);
  var outMonth=parseInt(theForm.outmonth.options[theForm.outmonth.selectedIndex].value,10)-1;
  var outYear=parseInt(theForm.outyear.options[theForm.outyear.selectedIndex].value,10);
  
  if(isLeapYear(outYear)) { var days = new Array(31,29,31,30,31,30,31,31,30,31,30,31); }
  else { var days = new Array(31,28,31,30,31,30,31,31,30,31,30,31); }

  var outDay=parseInt(theForm.outday.options[theForm.outday.selectedIndex].value,10);
  
  if(outDay >= days[outMonth]) { outDay = days[outMonth]; }
  else { outDay = outDay%days[outMonth]; }
  theForm.outday.options[outDay-1].selected=true;
}