/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}

function ValidateForm(){
	var dt=document.filters.getStartDate
	//alert(dt);
	if (dt.value!="") {
		if (isDate(dt.value)==false){
			dt.focus()
			return false
		}
	}
	
	var dt2=document.filters.getEndDate
	if (dt2.value!="") {
		if (isDate(dt2.value)==false){
			dt2.focus()
			return false
		}
	}
	
    return true
 }




function PopulateCities() {

   var CityList = document.filters.getState;
   
   // Clear out the list of Cities
   ClearOptions(document.filters.Cities);
   
   if (CityList[CityList.selectedIndex].value == "Illinois") {
   	  AddToOptionList(document.filters.Cities, "", "None");
      AddToOptionList(document.filters.Cities, "Champaign-Urbana", "Champaign-Urbana");
      AddToOptionList(document.filters.Cities, "Chicago", "Chicago");
	  AddToOptionList(document.filters.Cities, "Peoria", "Peoria");
	  AddToOptionList(document.filters.Cities, "Rockford", "Rockford");
	  AddToOptionList(document.filters.Cities, "Springfield, Ill", "Springfield, Ill");
   }

   if (CityList[CityList.selectedIndex].value == "Indiana") {
   	  AddToOptionList(document.filters.Cities, "", "None");
      AddToOptionList(document.filters.Cities, "Ft. Wayne", "Ft. Wayne");
      AddToOptionList(document.filters.Cities, "Indianapolis", "Indianapolis");
	  AddToOptionList(document.filters.Cities, "Northwest Indiana", "Northwest Indiana");
   }

   if (CityList[CityList.selectedIndex].value == "Iowa") {
   	  AddToOptionList(document.filters.Cities, "", "None");
      AddToOptionList(document.filters.Cities, "Des Moines", "Des Moines");
   }
   
   if (CityList[CityList.selectedIndex].value == "Kansas") {
   	  AddToOptionList(document.filters.Cities, "", "None");
      AddToOptionList(document.filters.Cities, "Topeka", "Topeka");
      AddToOptionList(document.filters.Cities, "Wichita", "Wichita");
   }
   
   if (CityList[CityList.selectedIndex].value == "Michigan") {
      AddToOptionList(document.filters.Cities, "", "None");
      AddToOptionList(document.filters.Cities, "Ann Arbor", "Ann Arbor");
      AddToOptionList(document.filters.Cities, "Battle Creek", "Battle Creek");
	  AddToOptionList(document.filters.Cities, "Detroit", "Detroit");
	  AddToOptionList(document.filters.Cities, "Flint", "Flint");
	  AddToOptionList(document.filters.Cities, "Grand Rapids", "Grand Rapids");  
	  AddToOptionList(document.filters.Cities, "Kalamazoo", "Kalamazoo");
	  AddToOptionList(document.filters.Cities, "Lansing", "Lansing");
   }
   
   if (CityList[CityList.selectedIndex].value == "Minnesota") {
      AddToOptionList(document.filters.Cities, "", "None");
      AddToOptionList(document.filters.Cities, "Minneapolis-St. Paul", "Minneapolis-St. Paul");
   }
   
   if (CityList[CityList.selectedIndex].value == "Missouri") {
      AddToOptionList(document.filters.Cities, "", "None");
      AddToOptionList(document.filters.Cities, "Kansas City", "Kansas City");
      AddToOptionList(document.filters.Cities, "Springfield, MO", "Springfield, MO");
	  AddToOptionList(document.filters.Cities, "St. Louis", "St. Louis");
   }
   
   if (CityList[CityList.selectedIndex].value == "Nebraska") {
      AddToOptionList(document.filters.Cities, "", "None");
      AddToOptionList(document.filters.Cities, "Lincoln", "Lincoln");
      AddToOptionList(document.filters.Cities, "Omaha", "Omaha");
   }
   
   //if (CityList[CityList.selectedIndex].value == "North Dakota") {
   //   AddToOptionList(document.filters.Cities, "5", "Golden State Warriors");
   //   AddToOptionList(document.filters.Cities, "6", "Minnesota Timberwolves");
   //}
   
   if (CityList[CityList.selectedIndex].value == "Ohio") {
      AddToOptionList(document.filters.Cities, "", "None");
      AddToOptionList(document.filters.Cities, "Cincinnati", "Cincinnati");
      AddToOptionList(document.filters.Cities, "Cleveland", "Cleveland");
	  AddToOptionList(document.filters.Cities, "Columbus", "Columbus");
	  AddToOptionList(document.filters.Cities, "Dayton", "Dayton");
   }
   
   //if (CityList[CityList.selectedIndex].value == "South Dakota") {
   //   AddToOptionList(document.filters.Cities, "5", "Golden State Warriors");
   //   AddToOptionList(document.filters.Cities, "6", "Minnesota Timberwolves");
   //}
   
   if (CityList[CityList.selectedIndex].value == "Wisconsin") {
      AddToOptionList(document.filters.Cities, "", "None");
      AddToOptionList(document.filters.Cities, "Green Bay", "Green Bay");
      AddToOptionList(document.filters.Cities, "Madison", "Madison");
	  AddToOptionList(document.filters.Cities, "Milwaukee", "Milwaukee");
      AddToOptionList(document.filters.Cities, "Wausau-Rhinelander", "Wausau-Rhinelander");
   }
}


function ClearOptions(OptionList) {

   // Always clear an option list from the last entry to the first
   for (x = OptionList.length; x >= 0; x = x - 1) {
      OptionList[x] = null;
   }
}


function AddToOptionList(OptionList, OptionValue, OptionText) {
   // Add option to the bottom of the list
   OptionList[OptionList.length] = new Option(OptionText, OptionValue);
}