var selectedMonth;
var selectedDay;
var selectedYear;
var kl;

function initHome() {
   // init date picker
   document.getElementById("MonthInput").value = "";
   document.getElementById("DayInput").value = "";
   document.getElementById("YearInput").value = "";

   document.getElementById('MonthInput').focus();

   kl = new YAHOO.util.KeyListener(document, { keys:13 }, { fn:processSearchOnEnter} );
   kl.enable();
}

function processSearchOnEnter() {
   if (isDate(selectedMonth + "/" + selectedDay + "/" + selectedYear)) {
      executeSearch();
   } else {
      alert("Enter a Valid Date");
   }
}

function showButtonIfValidDate() {

   selectedMonth = document.getElementById("MonthInput").value;
   selectedDay = document.getElementById("DayInput").value;
   selectedYear = document.getElementById("YearInput").value;
   if (selectedYear.length == 2){
       if (selectedYear != '20' && selectedYear != '19'){
           if (selectedYear<'20') selectedYear='20' + selectedYear;
           else selectedYear='19' + selectedYear;
       }
   }

   if (isDate(selectedMonth + "/" + selectedDay + "/" + selectedYear)) {
      YAHOO.util.Dom.addClass("ValidDateMessage", "hidden");
      YAHOO.util.Dom.removeClass("SearchButton", "hidden");
   } else {
      YAHOO.util.Dom.addClass("SearchButton", "hidden");
      YAHOO.util.Dom.removeClass("ValidDateMessage", "hidden");
   }
}


function executeSearch() {
   window.location.href = "db.aspx?page=Doob Cards&month=" + selectedMonth + "&day=" + selectedDay + "&year=" + selectedYear;
}