function menu_link(num)
{
	switch(num)

	{

	  case 1:window.location="websim.htm" ;break;

	  case 2:window.location="modsim.htm" ;break;

	  case 3:window.location="minisim.htm" ;break;

	  case 4:window.location="inshome.htm" ;break;

	  case 5:window.location="students.htm" ;break;
	  
	  case 6:window.location="customerservice.htm" ;break;

	  case 7:window.location="links.htm" ;break;

	}
}