var xmlHttp

function addtocart(pid, iid)
{ 
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	} 
	var url="http://www.imageeight.com.au/ajax_addtocart.php?"
	url=url+"pid="+pid+"&iid="+iid

	if(document.productform.colour[1].checked == true) {
		url=url+"&colour="+"bw"
	}
	else {
		url=url+"&colour="+"full"
	}
	
	url=url+"&sid="+Math.random()
	xmlHttp.onreadystatechange=stateChanged 
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
}



function stateChanged() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") { 
		document.getElementById("cart_response").innerHTML=xmlHttp.responseText 
	} 
}



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;
}