var http_request = false;

function makePOSTRequest(url, parameters) {
  http_request = false;
  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('results').innerHTML = result;   
			document.getElementById('buttons').innerHTML = "";
			document.getElementById('buttons').style.display = "none";
			document.getElementById('belMeForm').style.display = "none";
		} else {
			alert('There was a problem with the request.');
		}
	}
}

function submitBelMe() {
	
	if(!IsNumeric(document.getElementById("telefoon").value) || !(document.getElementById("telefoon").value.length > 9)){
		alert('U heeft geen correct telefoonnummer ingevoerd');
		return false;
	}
	
	if(!(document.getElementById("naam").value.length > 1)){
		alert('U heeft geen naam ingevoerd');
		return false;
	}
	
	if(!(document.getElementById("bedrijf").value.length > 1)){
		alert('U heeft geen bedrijfsnaam ingevoerd');
		return false;
	}
	
	document.getElementById('buttons').innerHTML = "<img src=\"img/ajax-loader.gif\" alt=\"loading\" />";
	
	var poststr = "telefoon=" + escape(encodeURI( document.getElementById("telefoon").value )) +
				"&naam=" + escape(encodeURI( document.getElementById("naam").value )) +
				"&bedrijf=" + escape(encodeURI( document.getElementById("bedrijf").value ));
	
	makePOSTRequest('belme.php', poststr);
  
}