function leftover_addtocart(item, sticker, color, size, price) {

    var postvalue = 'item='+encodeURI(item)+
                    '&sticker='+encodeURI(sticker)+
                    '&color='+encodeURI(color)+
                    '&size='+encodeURI(size)+
                    '&price='+encodeURI(price);
                    
    post(postvalue, 'ajax/leftover.php', leftover_addtocart_done);
}

function leftover_addtocart_done() {

 if(http_request.readyState == 4) { 
     document.getElementById('mod_leftover').innerHTML = http_request.responseText;
     countcart();
  }
}