function menu_link(num)
{
	switch(num)

	{

	  case 1:window.location="?page_id=21" ;break;

	  case 2:window.location="./elementary/" ;break;

	  case 3:window.location="./high/" ;break;

	  case 4:window.location="?page_id=4" ;break;

	  case 5:window.location="?page_id=5" ;break;

	  case 6:window.location="?page_id=6" ;break;

	  case 7:window.location="?page_id=7" ;break;

	}
}