function addtocart(a,b,c)
{
	cart=GetXmlHttpObject();
	function stateChangedTotal()
	{
		msg=cart.responseText;alert(msg);
	}	

	var url="php/product/order.php";
	url=url+"?pro="+a;
	url=url+"&qty="+b;
	url=url+"&opt="+c;
	url=url+"&add=1";
	cart.onreadystatechange=stateChangedTotal;
	cart.open("GET",url,true);
	cart.send(null);
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}