var preloadFlag = false;

//function preloadImages() {
//if (document.images) {


img1 = new Image();
img1.src = "images/nav-home-01.gif";

img2 = new Image();
img2.src = "images/nav-breakfastbuilder-01.gif";

img3 = new Image();
img3.src = "images/nav-healthytips-01.gif";


preloadFlag = true;

//	}
//}

function swap(whichImage, whichFile, whichDiv) {
	if(preloadFlag) {
	if (document.images) {
		if( document[whichDiv] )
			document[whichDiv].document[whichImage].src = "images/" + whichFile;
		else
			document[whichImage].src = "images/" + whichFile;
	}
}}



function show(id) {
	document.getElementById(id).className = "show";
}

function hide(id) {
	
document.getElementById(id).className = "hide";
}




//breakfast builder's code
selectedFood = new Array();
function selectItem(classId, foodId){
	if (document.getElementById(classId).className == classId + '00'){
		//	Allow only single selection for Bread and Egg
		if (foodId == 1 || foodId == 2){ //bread
			document.getElementById('bread1').className = 'bread100';
			document.getElementById('bread2').className = 'bread200';
			selectedFood = searchAndRemoveId(selectedFood, 1);
			selectedFood = searchAndRemoveId(selectedFood, 2);
		}
		if (foodId == 9 || foodId == 10){ //egg
			document.getElementById('egg1').className = 'egg100';
			document.getElementById('egg2').className = 'egg200';
			selectedFood = searchAndRemoveId(selectedFood, 9);
			selectedFood = searchAndRemoveId(selectedFood, 10);
		}
		if (foodId == '14' || foodId == '15' || foodId == '16' || foodId == '17'){ //Meal
			document.getElementById('breakfast1').className = 'breakfast100';
			document.getElementById('breakfast2').className = 'breakfast200';
			document.getElementById('breakfast3').className = 'breakfast300';
			document.getElementById('breakfast4').className = 'breakfast400';

			selectedFood = searchAndRemoveId(selectedFood, '14');
			selectedFood = searchAndRemoveId(selectedFood, '15');
			selectedFood = searchAndRemoveId(selectedFood, '16');
			selectedFood = searchAndRemoveId(selectedFood, '17');
		}
		
		document.getElementById(classId).className = classId + '01';
		selectedFood.push(foodId);
	}else{
		selectedFood = searchAndRemoveId(selectedFood, foodId);
		document.getElementById(classId).className = classId + '00';
	}
}

function searchAndRemoveId(myArray, myString){
	for (var i = 0;i<myArray.length ;i++)
		if (myArray[i] == myString){
			myArray.splice(i, 1);
			break;
		}
	return myArray;
}

function submitData(){
	var ageGroup = "";
	var gender = "";
	
	var g = document.getElementById('gender');
	gender = g.options[g.selectedIndex].value;
	var a = document.getElementById('ageGroup');
	ageGroup = a.options[a.selectedIndex].value;	
	if (gender == "" || ageGroup == "")
		alert("Please specify your child's gender and/or age");
	else if (selectedFood.length < 1)
		alert("Please select at least 1 breakfast item");
	else
		window.location = "breakfastresults.shtml?gender=" + gender + "&ageGroup=" + ageGroup + "&selectedFood=" + selectedFood; 
		//alert("breakfastresults.shtml?gender=" + gender + "&ageGroup=" + ageGroup + "&selectedFood=" + selectedFood); 

}