function postRequest(strURL){
                    var ajax = getXMLHttpRequestObject();

                    ajax.open('POST', strURL, true);
                    ajax.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                    ajax.onreadystatechange = function(){
                         if (ajax.readyState == 4){
                              updatepage(ajax.responseText);
                         }
                    }
                    ajax.send(strURL);
               }
               
               function updatepage(str){
                    document.getElementById('price').value = str;
               }
               
               function callProcess(){
                    var a = parseInt(document.bcard.finish.value);
                    var b = parseInt(document.bcard.quantity.value);
					var c = parseInt(document.bcard.cnr.value);
                    var url = "process.php?finish=" + a + "&quantity=" + b + "&cnr=" + c + "";
                    postRequest(url);
               }
// JavaScript Document