function chat(chat_id, width, height, path)
{
	Obj_chat = document.getElementById(chat_id);
	Obj_link = document.getElementById(chat_id + "_link");
	
	Obj_link.style.display = "none";
	
	Obj_chat.style.display = "block";
	Obj_chat.innerHTML = "<iframe src='" + path + "gTalk/gtalk_chatback.php?chat_id=" + chat_id + "' style='width: " + width + "px; height: " + height + "px; border: 0px; border-spacing: 0px;'></iframe>";
}