function getXhr()
{
	var xhr = null; 
	if(window.XMLHttpRequest) // Firefox et autres
		xhr = new XMLHttpRequest(); 
	else if(window.ActiveXObject) // Internet Explorer 
	{
		try
		{
			xhr = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			xhr = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	else
		xhr = false; 
	return xhr;
}

function openurl(url)
{
	var xhr = getXhr();
	xhr.onreadystatechange = function()
	{
	}
	xhr.open("GET",url,true);
	xhr.send(null);
}

function open_chat_salon(salon_id)
{
	openurl("/tchat/open_chat.php?salon="+salon_id);
}

function open_chat_user(user_id)
{
	openurl("/tchat/open_chat.php?user="+user_id);
}

function open_chat_salon_from_popup(salon_id)
{
	openurl("/tchat/open_chat.php?salon="+salon_id);
}

function open_chat_user_from_popup(user_id)
{
	openurl("/tchat/open_chat.php?user="+user_id);
}