function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

var itemarray = [];
var qtyarray = [];
var arrayLength = 0;
 
function addItem(itemNumber, quantity) {
	var removename = 'rem' + itemNumber;
	var checkname = 'check' + itemNumber;
	var uncheckname = 'uncheck' + itemNumber;
	itemarray[arrayLength] = itemNumber;
	qtyarray[arrayLength] = quantity;
	arrayLength++;
	//hide the add, show the remove
	document.getElementById(itemNumber).style.display = "none";
	document.getElementById(removename).style.display = "block";
	document.getElementById(uncheckname).style.display = "none";
	document.getElementById(checkname).style.display = "block";
}
function removeItem(itemNumber) {
	var removename = 'rem' + itemNumber;
	var checkname = 'check' + itemNumber;
	var uncheckname = 'uncheck' + itemNumber;
	var location;
	for (i = 0; i < arrayLength; i++) { 
		if (itemarray[i] == itemNumber) {
			location = i;
			break;
		}
	}
	//pull gap out of array
	for (i = location; i < arrayLength - 1; i++) {
		itemarray[i] = itemarray[i + 1]
		qtyarray[i] = qtyarray [i + 1]
	}
	itemarray[arrayLength] = '';
	qtyarray[arrayLength] = '';
	arrayLength--;
	//hide the remove, show add
	document.getElementById(removename).style.display = "none";
	document.getElementById(itemNumber).style.display = "block";
	document.getElementById(checkname).style.display = "none";
	document.getElementById(uncheckname).style.display = "block";
}
function removeAll() {
	var removename;
	var checkname;
	var uncheckname;
	for (i = 0; i < arrayLength; i++) {
		removename = 'rem' + itemarray[i]
		checkname = 'check' + itemarray[i]
		uncheckname = 'uncheck' + itemarray[i]
		document.getElementById(removename).style.display = "none";
		document.getElementById(itemarray[i]).style.display = "block";
		document.getElementById(checkname).style.display = "none";
	}
	arrayLength = 0;
}
function generateLink() {
	var itemadd = '';
	var qtyadd = '';
	if (arrayLength > 0) {
		for (i = 0; i < arrayLength; i++) {
			itemadd = itemadd + itemarray[i] + ',';
		}
		itemadd = itemadd.substring(0,itemadd.length - 1);
		for (i = 0; i < arrayLength; i++) {
			qtyadd = qtyadd + qtyarray[i] + ',';
		}
		qtyadd = qtyadd.substring(0,qtyadd.length - 1);
		return 'https://mycart.lef.org/Cart.aspx?item=' + itemadd + '&qty=' + qtyadd;
	}
	else {
		return 'https://mycart.lef.org/Cart.aspx';
	}
}
function doLink() {
    document.getElementById('ssOrder').style.display = "none";
    document.getElementById('ssProcessing').style.display = "block";
    window.location.href = generateLink();
}
function navigateAway() {
	var answer 
	if (arrayLength > 0) {
		answer = confirm('If you leave this page your selected items will not be added to your shopping cart.\nAre you sure you want to navigate away from this page?');
		if (answer) {
			return true;
		}
		else {
			return false;
		}
	}
	else {
		return true;
	}
}