function showSendArticle() {
	document.getElementById("id_send_article_form").style.display = "block";
}

function sendArticle() {
	var mail_sender = document.getElementById("id_mail_sender").value;
   	var mail = document.getElementById("id_mail").value;
   	var message = document.getElementById("id_message").value;
   	var cms_article_id = document.getElementById("id_cms_article_id").value;
   			
	if (window.ActiveXObject) httpRequest = new ActiveXObject("Microsoft.XMLHTTP"); else httpRequest = new XMLHttpRequest();
    httpRequest.open("POST", "send_message.php", true);
    httpRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    httpRequest.onreadystatechange=function() {processRequest(); } ;
    httpRequest.send("mail_sender=" + mail_sender + "&mail=" + mail + "&message=" + message + "&cms_article_id=" + cms_article_id);
}
function processRequest() {
	if (httpRequest.readyState==4) {
   		if(httpRequest.status==200) {
   			alert("Děkujeme, Vaše zpráva byla odeslána.");
   			document.getElementById("id_mail_sender").value = "";
   			document.getElementById("id_mail").value = "";
   			document.getElementById("id_message").value = "";
   			closeSendArticle();
   		}
	}
}

function closeSendArticle() {
	document.getElementById("id_send_article_form").style.display = "none";
}