var obj_time_out = null;

function open_sub_menu(menu_id)
{
//	if(obj_time_out != null)
//	{
//		clearTimeout(obj_time_out);	
//	}
	document.getElementById(menu_id).style.display = 'block';
}

function close_sub_menu(menu_id)
{
//	if(obj_time_out != null)
//	{
//		clearTimeout(obj_time_out);	
//	}
//	obj_time_out = setTimeout("menu_time_out", close_sub_menu_(menu_id), 1000);
	close_sub_menu_(menu_id);
}

function close_sub_menu_(menu_id)
{
	document.getElementById(menu_id).style.display = 'none';
}

function sem(address, host, extension)
{
        window.location = "mailto:" + address + "@" + host + "." + extension;   
}