function checkSubmit() 
{

if(document.form1.gradeId.value=="0" || document.form1.gradeId.value=="") {
	alert("Please fill in the grade you are applying for");
	document.form1.gradeId.focus();	
	return false;
	}
if(document.form1.stfname.value=="NA" || document.form1.stfname.value=="" ) {
	alert("Please fill in the your name ");
	document.form1.stfname.focus();	
	return false;
	}
if(document.form1.stdate.value=="" ) {
	alert("Please fill in the Application Date (e.g mm/dd/yyyy)");
	document.form1.stdate.focus();	
	return false;
	}
if(document.form1.dob.value=="" ) {
	alert("Please fill in the Birth Date (e.g mm/dd/yyyy)");
	document.form1.dob.focus();	
	return false;
	}

document.form1.submit();

}

function validateDate(elem) {
  //Obj=eval(""+elem);
  if (!isDate(elem.value)) {
    elem.focus();
    return false;
  }
  return true;
}

function validateSubmit(arr)
{
  for (i = 0; i < arr.length; i++) {
    id = arr[i];
    elem = document.getElementById(id);
    if (id == 'date') {
      if (!validateDate(elem)) return false;
    } else if (elem.value == null || elem.value == '') {
      msg = "Please enter or select a ";
      if (id == 'gradeId') msg+="Subject and/or Grade.";
      else msg+="value.";
      alert(msg);
      elem.focus();
      return false;
    }

  }
  
  document.form1.submit();
  return true;
}

/**
 * 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 strYear=dtStr.substring(0,pos1);
	var strMonth=dtStr.substring(pos1+1,pos2);
	var strDay=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 : yyyy-mm-dd");
		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.frmSample.txtDate;
	if (isDate(dt.value)==false){
		dt.focus();
		return false;
	}
    return true;
 }