var boxLimit	= 20;
var roomLimit	= 7;
var monthLimit	= 12;
var monthQty	= 1;
var beginMonth	= 1278000000;
var studentQty	= 1;
var roomQty		= 1;
var boxOptions	= new Array(1);
for (var i = 1;i < roomLimit;i++){
    boxOptions[i] = 0;
}

function calcCurriculumPrice()
{
	var rooms = Number(document.getElementById("roomQty").value);
	var studentQty = Number(document.getElementById("studentQty").value);
	var studentsEntered = countStudents(rooms);
    if(document.curriculumForm.supplement.checked == true){
        var supplementQty = document.curriculumForm.supplementQty.value;
    }else{
        var supplementQty = 0;
    }

	if(compareCounts(studentsEntered,studentQty)){
    	productCalc(monthQty,boxOptions,supplementQty);
	}
	return false;
}

function setMonthQty(months)
{
	monthQty = Number(months);
}

function compareCounts(boxes,studentQty)
{
	if(boxes != studentQty){
		alert("The total number of students must match the quantity entered in the rooms.");
		return false;
	}
	return true;
}

function countStudents(rooms)
{
	var students = 0;
	var totalStudents = 0;
	var boxes = Array();
	for(var i = 0; i < rooms; i++){
		students = Number(document.getElementById("boxOption_"+i).value);
		if(students > boxLimit){
			toggleQtyWarning();
			setElementById("boxOption_"+i,boxLimit);
			boxes[i] = boxLimit;
			totalStudents +=boxLimit;
		}else{
			boxes[i] = students;
			totalStudents += students;
		}
	}
	boxOptions = boxes;
	return totalStudents;
}

function checkBoxLimit(students,id){
	students = students * 1;
	if(students > boxLimit){
		toggleQtyWarning();
		setElementById(id,boxLimit);
	}
}

function setElementById(el,val)
{
    if(document.getElementById(el)){
       document.getElementById(el).value = val;
    }
}

function getElementValueById(el)
{
    if(document.getElementById(el)){
       return document.getElementById(el).value;
    } else {
        return 0;
    }
}

function setSingleBoxValue(qty)
{
	if(qty > boxLimit){
		qty = boxLimit;
	}
	boxOptions[0] = qty;
	document.getElementById("boxOption_0").value = qty;
}

function messWithTestBox(rooms)
{
	if(rooms > 1){
		toggleRoomView();
	}
    var box = document.getElementById("testBox");
	var students = document.getElementById("studentQty").value;

    var inputs = "";
    var i = 0;
        while(i < rooms){
        inputs = inputs + '<input type="text" name="boxOption[]" onChange="javascript: checkBoxLimit(this.value,this.id);" id="boxOption_'+i+'" size="4" value="';
            if(i == 0){
				if (rooms == "1"){
					if(students <= boxLimit){
						inputs =  inputs + students;
					}else{
						inputs =  inputs + students;
                        document.getElementById("roomQty").focus();
						toggleQtyWarning();
					}
				}else{
                	inputs = inputs + "1";
				}
            } else {
                inputs = inputs + "0";
            }
            inputs = inputs + '">';
            i++;
        }
        box.innerHTML = inputs;
}


function toggleRoomView()
{
	document.getElementById('roomBoxes').style.display = "block";
	document.getElementById('roomBoxesAlt').style.display = "none";
}
function fadeDown(obId,value)
{
    var ob = document.getElementById(obId);
    value = value -1;
    if(value >= 0){
        ob.style.opacity = value/10;
        ob.style.filter = 'alpha(opacity=' + value*10 + ')';
        setTimeout('fadeDown("'+obId+'",'+value+')',100);
    }
}
function toggleQtyWarning()
{
    var box = document.getElementById('qtyWarning');
    if(box.style.opacity == 10){
        fadeDown('qtyWarning',10);
    } else {
        box.style.display = "block";
        box.style.opacity = 10;
        setTimeout('toggleQtyWarning()',5000);
    }
}

function verifyCurriculum()
{
	var months = Number(document.getElementById("monthQty").value);
	var students = Number(document.getElementById("studentQty").value);
	var rooms = Number(document.getElementById("roomQty").value);
	var roomQty = 0;
	var warning = document.getElementById('qtyWarning');

	if(warning.style.opacity > 1){
		console.log("TEST");
		return false;
	}

	if(rooms == 1){ //make sure the students box stays the same as the studentQty if there's only one room
		setSingleBoxValue(students);
	}

	if(months <= 0){
		alert("The number of months is invalid.");
		document.getElementById("monthQty").focus();
		return false;
	}

	if(students <= 0){
		alert("The number of students is invalid.");
		document.getElementById("studentQty").focus();
		return false;
	}

	for(var i = 0; i < rooms; i++){
		roomQty += boxOptions[i];
	}
	if(countStudents(rooms) != students){
		alert("The number of students does not match the rooms. ");
		document.getElementById("roomQty").focus();
		return false;
	}

	document.curriculumForm.submit();
}