function BookmarkThis(page_url) {
	var ver = navigator.appName;
	var num = parseInt(navigator.appVersion);
	if( (ver == "Microsoft Internet Explorer")&&(num >= 4)) {
		window.external.AddFavorite(location.href,document.title);
	} else {
		alert("Sorry. Netscape users must bookmark the pages manually by hitting <Ctrl-D>");
	}
	return false;
}

var jsDOM0 = (document.all);
var jsDOM1 = (document.getElementById);
var jsDOM = jsDOM0 || jsDOM1;
var jsDebug = 0;

function getObj (name)
{
    if (typeof name == "object") return name;
    if (jsDOM1) return document.getElementById(name);
    if (jsDOM0) return eval('document.all.'+name);
    else return null;
}
	
function show(element)
{
	oMenu_1 = getObj('nav_1');
	oMenu_2 = getObj('nav_2');
	oMenu_3 = getObj('nav_3');
	oMenu_4 = getObj('nav_4');
	oMenu_5 = getObj('nav_5');
	oMenu_6 = getObj('nav_6');
	
	oMenu_1.style.display = 'none';
	oMenu_2.style.display = 'none';
	oMenu_3.style.display = 'none';
	oMenu_4.style.display = 'none';
	oMenu_5.style.display = 'none';
	oMenu_6.style.display = 'none';
	
	oMenu = getObj(element);
	oMenu.style.display = 'block';
}