function message_script()
{
    if ( messageBoxCanSend == false )
    {
        document.getElementById("messageBoxMessage").value = "";
    }
    
    messageBoxCanSend = true;
}

function messageBoxSubmit()
{
    if ( messageBoxCanSend == false )
    {
        alert( "Vous devez entrer un message avant de valider" );
        return;
    }
    
    sendMessageAjaxMessageBoxCenter = document.getElementById( "message_ajax_center" );
    
    sendMessageAjaxMessageBoxCenter.innerHTML      = "Envoi de votre message";
    sendMessageAjaxMessageBoxCenter.style.position = "fixed";
    sendMessageAjaxMessageBoxCenter.style.display  = "block";
    
    p           = document.getElementById("messageBoxP");
    forum_id    = document.getElementById("messageBoxForumId");
    message     = document.getElementById("messageBoxMessage");
    user_name   = document.getElementById("messageBoxUserName");
    text_img_id = document.getElementById("messageBoxTextImgId");
    text_img    = document.getElementById("messageBoxTextImg");
    
    messageBoxStringURL = forumBaseURL;
    
    ajax = LoadAjax();
    
    if ( ajax == false )
    {
        return false;
    }
    
    if ( p )
    {
        messageBoxStringURL += "p=" + p.value + "&";
    }
    
    if ( forum_id )
    {
        messageBoxStringURL += "forum_id=" + forum_id.value + "&";
    }
    
    if ( message )
    {
        messageBoxStringURL += "message=" + message.value + "&";
    }
    
    if ( user_name )
    {
        messageBoxStringURL += "user_name=" + user_name.value + "&";
    }
    
    if ( text_img_id )
    {
        messageBoxStringURL +="text_img_id=" + text_img_id.value + "&";
    }
    
    if ( text_img )
    {
        messageBoxStringURL += "text_img=" + text_img.value + "&";
    }
    
    ajax.open( "POST", messageBoxStringURL, true );
    ajax.setRequestHeader( "Content-Type", "application/x-www-form-urlencoded" );
    
    ajax.send( null );
    
    ajax.onreadystatechange = function()
    {
        if ( ajax.readyState == 4 )
        {
            sendMessageAjaxMessageBoxCenter.innerHTML = ajax.responseText;
            
            setTimeout( 'closeAjaxMessageBoxCenter()', 3 * 1000 );
            
            document.getElementById("messageBoxMessage").value = "";
        }
    }
}