function update_shopping_cart()  { 
	if (xmlHttp.readyState==4) { 
		document.getElementById("scart").innerHTML=xmlHttp.responseText;
	}
}

function show_shopping_cart() {
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null){
		alert ("Your browser does not support AJAX!");
		return;
	}
	
	var url="../data/show_cart_side.php?show";
	xmlHttp.onreadystatechange=update_shopping_cart;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}