var http = getXmlHttpRequestObject();

function addToCart(ID,cant) {
	var value=document.getElementById(ID).value;
	if(value=="") {
		alert("Please select a product!");	
	} else {
		if(cant=="0" || cant=="") {
			document.getElementById('errorMess').innerHTML='Please enter a valid quantity!';	
			document.getElementById('errorMess').style.display='block';
		}
		else  {
			http.open('get', '../shop/cartItems.php?pID='+value+'&cant='+cant);
			http.onreadystatechange = handleResponse1;
			http.send(null);
			document.getElementById('errorMess').style.display='none';
			document.getElementById('link'+ID).style.display='none';
			document.getElementById('added'+ID).style.display='block';
		}
	}
}

function allowBuy(ID) {
	document.getElementById('link'+ID).style.display='block';
	document.getElementById('added'+ID).style.display='none';
}

function handleResponse1() {
  if(http.readyState == 4){
	  var response = http.responseText;
	  document.getElementById('cartItem').innerHTML = response;
  }
}