function menu_link(num)
{
	switch(num)
	{
	  case 1:window.location="rb2006_overview.htm" ;break;
	  case 2:window.location="rb2006_introduction.htm" ;break;
	  case 3:window.location="rb2006_who_should_attend.htm" ;break;
	  case 4:window.location="rb2006_sponsors.htm" ;break;
	}
}