var loadMessage = "<table class='gensmallb' width=100% height=100%><tr><td align=center><br><br><img src='../atheatt/indicator_snake.gif' border=0><br><br>&nbsp;Загрузка..<br><br></td></tr></table>";
var loadAvatar = "<img src='"+main_avatar_path+"blank.png'>";

function hide_mail_ico(){
	document.getElementById('mail_ico_div').innerHTML='';
}

function hidemesspreviewlayer(){
	document.getElementById('message_preview').style.visibility='hidden';
}

function showmesspreviewlayer(){
	document.getElementById('message_text').innerHTML = loadMessage;
//	document.getElementById('message_avatar').innerHTML = loadAvatar;
	document.getElementById('message_preview').style.visibility='visible';
}

	
function get_message_preview(session_id, prev_msg_id, prev_msg_action, href){
	if (prev_msg_id);
	else prev_msg_id=0;
	if (prev_msg_action);
	else prev_msg_action=0;
	
	showmesspreviewlayer();
	JsHttpRequest.query(
       '../inc/get_message_preview.php', 
	    { session_id: session_id , prev_msg_id: prev_msg_id, prev_msg_action: prev_msg_action }, 
		function(responseJS, responseText) {
			if (responseJS.unread_count && responseJS.unread_count != '0'){
				//есть непрочитанные письма
				document.getElementById('message_text').innerHTML = responseJS.message_text;
//				document.getElementById('message_avatar').innerHTML = responseJS.message_avatar;
				atheaTT.init();
			}
			else{
				if (responseJS.unread_count == 0)
					hide_mail_ico();
				hidemesspreviewlayer();
				if (href)
					location.href=href;
			}
	    },
		true
   );
}