
<!--
function MenuUpdate(menu_item) {
 document.getElementById("menu_license").style.visibility="hidden";
 document.getElementById("menu_coast").style.visibility="hidden";
 document.getElementById("menu_mountains").style.visibility="hidden";
 document.getElementById("menu_deserts").style.visibility="hidden"; 
 document.getElementById("menu_marine_mammals").style.visibility="hidden";
 document.getElementById("menu_marine_wildlife").style.visibility="hidden";
 document.getElementById("menu_sandiego").style.visibility="hidden";
 document.getElementById("menu_general").style.visibility="hidden"; 
 if (menu_item != 'hide')
  {
   document.getElementById(menu_item).style.visibility="visible";
  }
}
//-->