function addTocart(str)
{
	var user	=	"guest";
	var pid		=	"";
	var page 	=	"";

	page		=	"addtocart.php"
	
	url			=	page+"?"+"user="+user+"&pro="+str
	
	
	xmlHttp		=	GetXmlHttpObject()
	
	if (xmlHttp==null)
 	{
 			alert ("Browser does not support HTTP Request")
 			return
 	}
	
	xmlHttp.onreadystatechange=stateChanged 
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
}

function stateChanged() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 	{ 
		document.getElementById("spanArea").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;
}