var add_prod_to_cart_xmlHttp

function add_prod_to_cart(prod_code) 
{
add_prod_to_cart_xmlHttp=GetXmlHttpObject()

if (add_prod_to_cart_xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request");
 return
 }

        var add_prod_to_cart_url = 'ajax_php/add_to_cart.php?';
        add_prod_to_cart_url = add_prod_to_cart_url + "do=add_to_cart&theCode=" + prod_code;
        add_prod_to_cart_xmlHttp.onreadystatechange = add_prod_to_cart_statechange;
        add_prod_to_cart_xmlHttp.open("GET", add_prod_to_cart_url, true);
        add_prod_to_cart_xmlHttp.send(null);

}

function add_prod_to_cart_statechange() 
{
    if (add_prod_to_cart_xmlHttp.readyState==4 || add_prod_to_cart_xmlHttp.readyState=="complete")
    { 
	
	    returnedStringArray = (add_prod_to_cart_xmlHttp.responseText).split(",");
	
        document.getElementById('num_cart_items').innerHTML = parseInt(document.getElementById('num_cart_items').innerHTML)+parseInt(returnedStringArray[0]);
        alert(returnedStringArray[1]);
    } 
}


function add_pinch_and_snap_to_cart()
{
   var prodCode = "XS";
   prodCode = prodCode+"-"+document.getElementById('length').value;
   prodCode = prodCode+"-"+document.getElementById('color').value;
   prodCode = prodCode+"-"+document.getElementById('snappinch').value;
   if (document.getElementById('shielded').value != "")
   {
      prodCode = prodCode+"-"+document.getElementById('shielded').value;
   }
   add_prod_to_cart(prodCode);
   
}  

function add_select_to_cart(selectBoxId)
{
   var prodCode = document.getElementById(selectBoxId).value;
   add_prod_to_cart(prodCode);
}