// JavaScript to expand list of links on selection

var current = "none";  // initialize current open menu to none when page loaded


function toggleMenu (newmenu) {
//    if (document.getElementById) { // get element    
	if (newmenu == "none" || current == newmenu) { // no change needed
	    return true;
        } // end no change needed
        else { // open menu exists
	    // menu switch 

	    // Close existing menu
	    if (current != "none") { // close existing menu if needed
	    var oldMenuState = document.getElementById(current).style;
	    oldMenuState.display = "none";
  	    } // end close existing menu if needed
	    var menuState = document.getElementById(newmenu).style;
	    if (menuState.display == "block") {  // close menu
	        menuState.display = "none";
	    } // end close menu 
	    else { // open new menu
	        menuState.display = "block";
	    } // end open new menu
	    current = newMenu;
	    return false;
        } // end switch menu
	    return true;
//    } // end get element
}