function display_menu(ID) {

    var i = 0;

	while (document.getElementById('menu' + i) != null)
    {
		document.getElementById('menu' + i).className = 'menulink';
        document.getElementById('menu' + i).innerHTML = '<a href="' + menuitems[i][1] + '" class="menulinktext">' + menuitems[i][0] + '</a>';
        i++;
    }

    document.getElementById('menu' + ID).className = 'menuactive';
    document.getElementById('menu' + ID).innerHTML = menuitems[ID][0];

    i = 0;
    var links = "";

    while (i < submenuitems[ID].length)
    {
    	links = links + '<span style="margin-left : 10px">&nbsp;</span><a href="' + submenuitems[ID][i][1] + '" class="submenulink">' + submenuitems[ID][i][0] + '</a>';
    	i++;
    }

    document.getElementById('usermenu').innerHTML = links;

}