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_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_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];}
}

function sendForm(){
	// Declare main form name value as a string
	var f = "contactform";
	//////////////////////////////////////////
	var f2 = eval(document.forms[f]);
	// Start custom validation
	if(!checkEmail("email",f,"Please enter a valid email address.")) return false;
	return true;
}

function GetXmlHttpObject() {
	var xmlHttp=null;
	try {
		// Firefox, Opera 8.0+, Safari
  		xmlHttp=new XMLHttpRequest();
	} catch (e) {
  		// Internet Explorer
  		try {
    		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}

function addToBasket(sku, quantity) {
	var xmlHttp = GetXmlHttpObject();
	xmlHttp.onreadystatechange=function() {
		if(xmlHttp.readyState==4) {
			//createPopup(xmlHttp.responseText);
			createPopup('Added to basket');
		}
	}
	xmlHttp.open("GET",'shop_addtobasket.php?sku=' + sku + '&quantity=' + quantity,true);
//	xmlHttp.open("GET",'shop_addtobasket.php',true);
	xmlHttp.send(null);
}
function quantity_up(quantity) {
	var qty = document.getElementById(quantity);
	qty.value++;
}
function quantity_down(quantity) {
	var qty = document.getElementById(quantity);
	if (qty.value > 1) {
		qty.value--;
	}
}

function createPopup(innerHTML) {
	var popUp = document.createElement('div');
	popUp.setAttribute('id', 'ex_popup');
	var whole = document.getElementById('whole');
	whole.appendChild(popUp);
	popUp.innerHTML = innerHTML;
}