var updCart =getXmlHttpRequestObject();
function getXmlHttpRequestObject() {
	if (window.XMLHttpRequest) {
		return new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		return new ActiveXObject("Microsoft.XMLHTTP");
	} 
} 
function update_cart(sentbit)
{
var oldVal = document.getElementById("kC_qty_"+sentbit).value;
	setTimeout(checkIfDone, 750);
	
	function checkIfDone()
	{
		var newVal = document.getElementById("kC_qty_"+sentbit).value;
		if(newVal == oldVal)
		{
			update_cart_fetch(sentbit)
		}
	}
}
function update_cart_fetch(row) {
	if (updCart.readyState == 4 || updCart.readyState == 0) {
		if (document.getElementById('kC_load_'+row)) {
			document.getElementById('kC_load_'+row).style.display = 'inline';
		}
		day = new Date();
		thetime = day.getTime();
		updCart.open("GET", 'scripts/update_cart.php?row='+row+'&qty_value='+document.getElementById("kC_qty_"+row).value+'&time='+thetime, true);
		updCart.onreadystatechange = updated_cart; 
		updCart.send(null);
	}		
}			
function updated_cart() {
	if (updCart.readyState == 4) {
		if (updCart.responseText) {
			day = new Date();
			thetime = day.getTime();
			updated = updCart.responseText.split('|');			
			if (parseInt(document.getElementById("kC_qty_"+updated[6]).value) > parseInt(updated[11])) {
				main_errorfield("kC_qty_"+updated[6], '<strong>Stock Warning</strong><br>This item only has '+updated[11]+' in stock.<br>Your Qty has been altered to reflect this.', thetime);
			} else {
				main_unerrorfield("kC_qty_"+updated[6], thetime);
			}
			document.getElementById("kC_qty_"+updated[6]).value = updated[0];
			document.getElementById("kC_row_total_"+updated[6]).innerHTML = updated[7];
			if (document.getElementById('kC_discount_total_'+updated[6])) {
				document.getElementById('kC_discount_total_'+updated[6]).innerHTML = updated[2];
			}
			if (document.getElementById('kC_subtotal')) {
				document.getElementById('kC_subtotal').innerHTML = updated[1];
			}
			if (document.getElementById('kC_vattotal')) {
				document.getElementById('kC_vattotal').innerHTML = updated[12];
			}
			if (document.getElementById('kC_sub_less_dis')) {
				document.getElementById('kC_sub_less_dis').innerHTML = updated[3];
			}
			if (document.getElementById('kC_sub_less_dis')) {
				document.getElementById('kC_sub_less_dis').innerHTML = updated[3];
			}
			if (document.getElementById('kC_delivery')) {
				document.getElementById('kC_delivery').innerHTML = updated[4];
			}
			if (document.getElementById('kC_total')) {
				document.getElementById('kC_total').innerHTML = updated[5];
			}
			if (document.getElementById('kC_vat_total_'+updated[6])) {
				document.getElementById('kC_vat_total_'+updated[6]).innerHTML = updated[9];
			}
			if (document.getElementById('kC_mv_total_'+updated[6])) {
				document.getElementById('kC_mv_total_'+updated[6]).innerHTML = updated[8];
			}
			if (document.getElementById('kC_sub_less_dis')) {
				document.getElementById('kC_sub_less_dis').innerHTML = updated[3];
			}
			if (document.getElementById('kC_load_'+updated[6])) {
				document.getElementById('kC_load_'+updated[6]).style.display = 'none';
			}
			if (document.getElementById('kC_discount')) {
				if (updated[10] && updated[10] != '0.00') {
					document.getElementById('kC_discount_show').style.display = '';
				} else {
					document.getElementById('kC_discount_show').style.display = 'none';
				}
				document.getElementById('kC_discount').innerHTML = updated[10];
			}
		}
	}
}
function change_delivery(linked) {
	location = linked+'?update_delivery='+escape(document.getElementById('update_delivery').value);
}