var d, dom, ie, ie4, ie5x, moz, mac, win, lin, old, ie5mac, ie5xwin, op;

d = document;
n = navigator;
na = n.appVersion;
nua = n.userAgent;
win = (na.indexOf('Win') != -1);
mac = (na.indexOf('Mac') != -1);
lin = (nua.indexOf('Linux') != -1);

if (!d.layers) {
	dom = (d.getElementById);
	op = (nua.indexOf('Opera') != -1);
	konq = (nua.indexOf('Konqueror') != -1);
	saf = (nua.indexOf('Safari') != -1);
	moz = (nua.indexOf('Gecko' ) != -1 && !saf && !konq);
	ie = (d.all && !op);
	ie4 = (ie && !dom);

	/*
	ie5x tests only for functionality. ( dom||ie5x ) would be default settings. 
	Opera will register true in this test if set to identify as IE 5
	*/

	ie5x = (d.all && dom);
	ie5mac = (mac && ie5x);
	ie5xwin = (win && ie5x);
}

function getElementById(id) {
  return (ie)? document.all[id] : document.getElementById(id);
}

function getChildren(obj, n) {
	return (ie)? obj.children(n) : obj.childNodes[0];
}

function go(href) {
	location.href = href;
}