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;

  }

  //alert(parameters);

  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);

}



String.prototype.trim = function () 

{

    return this.replace(/^\s*/, "").replace(/\s*$/, "");

}





function alertContents() 

{

	//alert(http_request.responseText);

  if (http_request.readyState == 4) 

  {

	 if (http_request.status == 200) 

	 {

		result = http_request.responseText;

		result = result.trim();

		if(result == "Invalid security code.")

		{

			alert(http_request.responseText);

			result = http_request.responseText;

			document.getElementById('send-link-to-friend-result').innerHTML = result;   

		}

		else

		{

			alert(http_request.responseText);

			result = http_request.responseText;

			document.getElementById('send-link-to-friend-result').innerHTML = result;   

			document.getElementById("txt_friendemail").value = "";

			document.getElementById("txt_friendmessage").value = "";	

			document.getElementById("txt_captcha").value = "";

		}

	 } 

	 else 

	 {

		alert('Er is een probleem met uw aanvraag.');

	 }

  }

}



function get(obj,url) 

{

	_e=document.getElementById("txt_friendemail");

	_c=document.getElementById("txt_captcha");

	

	var get_friends_email=_e.value;

	var friends_email_array=get_friends_email.split(",");

	var part_num=0;

	

	if(_e.value=="")

	{

		alert("Vul het emailadres in");

		_e.focus();

		return false;    

	}

	if(_e.value!="" && (_e.value.indexOf("@",0)==-1 || _e.value.indexOf(".",0)==-1))

	{

		alert("Vul een geldig enail adres in.");

		_e.focus();

		_e.select();

		return false;

	} 

	while (part_num < friends_email_array.length)

	{

	   if(part_num > 0)

	   {

			alert("Maximaal 1 adres");

			return false;

	   }

	   part_num+=1;

	}

	if(_c.value=="")

	{

		alert("Voer de code in.");

		_c.focus();

		return false;    

	}

	

	document.getElementById('send-link-to-friend-result').innerHTML = "Sending...";   

	var poststr = "txt_friendemail=" + encodeURI( document.getElementById("txt_friendemail").value ) +

					"&txt_friendmessage=" + encodeURI( document.getElementById("txt_friendmessage").value ) +

					"&txt_captcha=" + encodeURI( document.getElementById("txt_captcha").value ) +

					 "&sendlink=" + encodeURI( document.getElementById("sendlink").value );

		

	makePOSTRequest(url+'send-mail.php', poststr);

}