var date_arr = new Array;
var days_arr = new Array;
var dateNow = new Date();
var f = new Date();

date_arr[0]=new Option("January",31);
date_arr[1]=new Option("February",28);
date_arr[2]=new Option("March",31);
date_arr[3]=new Option("April",30);
date_arr[4]=new Option("May",31);
date_arr[5]=new Option("June",30);
date_arr[6]=new Option("July",31);
date_arr[7]=new Option("August",30);
date_arr[8]=new Option("September",30);
date_arr[9]=new Option("October",31);
date_arr[10]=new Option("November",30);
date_arr[11]=new Option("December",31);



function fill_select(f)

{
        if(f == document.FRM1)
         document.writeln("<select name=\"months\"onchange=\"update_days(FRM1)\">");
        else
         document.writeln("<select name=\"months\"onchange=\"update_days(FRM2)\">");  

        for(x=0;x<12;x++) 

                document.writeln("<OPTION value=\""+date_arr[x].value+"\">"+date_arr[x].text);

        document.writeln("</select><select name=\"days\"></select>");

        selection=f.months[f.months.selectedIndex].value;

}


function update_days(f)

{

        temp=f.days.selectedIndex; 

        for(x=days_arr.length;x>0;x--)

        {

                days_arr[x]=null;

                f.days.options[x]=null;

         }

        selection=parseInt(f.months[f.months.selectedIndex].value);

        ret_val = 0;

        if(f.months[f.months.selectedIndex].value == 28)

        {

                year=parseInt(f.years.options[f.years.selectedIndex].value);

                if (year % 4 != 0 || year % 100 == 0 ) ret_val=0;

                else

                        if (year % 400 == 0)  ret_val=1;

                        else

                                ret_val=1;

        }

        selection = selection + ret_val;        

        for(x=1;x < selection+1;x++) 

        

        {

                days_arr[x-1]=new Option(x);            

                f.days.options[x-1]=days_arr[x-1];

        } 

        if (temp == -1) f.days.options[0].selected=true;

        else

             f.days.options[temp].selected=true;  

}       

function year_install(f)

{

yr = dateNow.getYear();
if (yr < 1900) { yr+=1901; }

        document.writeln("<nobr>");
        document.writeln("<select name=\"years\" onchange=\"update_days(f)\"");

        for(x=yr-1;x<yr+2;x++) document.writeln("<OPTION value=\""+x+"\">"+x);
      

        document.writeln("</select>");
        document.writeln("</nobr>");

        update_days(f);

}


function checkDates(y1,m1,d1,y2,m2,d2)

{
 
 var dateFrom = new Date(y1,m1,d1);
 var dateTo = new Date(y2,m2,d2);

 nights = parseInt((dateTo-dateFrom)/(1000*60*60*24) + 0.5);

 if (dateFrom <= dateNow)
  { 
   alert("Arrival date must be later than today's date.");
   return false;
  }
 else if (dateTo <= dateNow)
  {
   alert("Departure date must be later than today's date.");
   return false;
  }
 else if (dateTo <= dateFrom)
  {
   alert("Departure date must be later than arrival date.");
   return false;
  }
 else if (nights > 28)
  {
   alert("Special rates apply for stays greater than 28 days. Please contact us directly");
   return false;
  }
 else
  {
   document.FRM3.dateFrom.value = dateFrom;
   document.FRM3.dateTo.value = dateTo;
   document.FRM3.nights.value = nights;
   return true;
  }
}