var ajaxreq=false, ajaxCallback;

function ajaxRequest (filename) {
	try
	{
		ajaxreq=new XMLHttpRequest();

	}
	catch (error)
	{
		try
		{
			//IE 5 , 6
			ajaxreq = new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch (error)
		{
			return false;
		}
	}
	ajaxreq.open("GET",filename);
	
//	ajaxreq.onreadystatechange=nextQuestion;
	ajaxreq.onreadystatechange=ajaxCallback;
	ajaxreq.send(null);
//	alert("request finish");
}
	//ajaxResponse: Waits for response and call a function

function ajaxResponse() {
 if(ajaxreq.readystate != 4)	return;
		if(ajaxreq.status == 200) {
				alert("request succeeded...");
				if(ajaxCallback) ajaxCallback();
		} else alert("Request Failed : " + ajaxreq.statusText);
		return true;
}


  var http_request = false;
   function makePOSTRequest(url, parameters) {
      http_request = false;
	document.getElementById("out2").innerHTML="<img src=images/loading.gif>";
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('printorder').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function get(obj) {
      var poststr = "id=" + encodeURI( document.getElementById("id").value ) +
                    "&code=" + encodeURI( document.getElementById("code").value )+
                    "&retURL=" + encodeURI( document.getElementById("retURL").value ) +
                    "&name=" + encodeURI( document.getElementById("name").value )+
                    "&price1=" + encodeURI( document.getElementById("price1").value )+
                    "&action=edit";
//	  alert(poststr);
      makePOSTRequest('priceopt.php', poststr);
   }



function isNumeric(value) {
  if (value == null || !value.toString().match(/^[-]?\d*\.?\d*$/)) return false;
  return true;
}