$(document).ready(function(){
	$(".addtocart").click(function() { 
  		$("#cartform").submit(); 
	});
});

function checkStock(thisForm) {
	
	var qty_required;
	var qty_in_stock;
	var form_name = thisForm.value;
	
	qty_required = parseInt(document.getElementById(thisForm).txtQty.value);
	qty_in_stock = parseInt(document.getElementById(thisForm).qty_in_stock.value);
				
	if (qty_required > qty_in_stock) {
		alert('Sorry there are only ' + qty_in_stock + ' left in stock');
		return false;
	} else {
		return true;
	}

}