var browser_debug=0;

var ns4 = document.layers;
var op5 = (navigator.userAgent.indexOf("Opera 5")!=-1) 
	||(navigator.userAgent.indexOf("Opera/5")!=-1);
var op6 = (navigator.userAgent.indexOf("Opera 6")!=-1) 
	||(navigator.userAgent.indexOf("Opera/6")!=-1);

var agt=navigator.userAgent.toLowerCase();
var mac = (agt.indexOf("mac")!=-1);
var ie = (agt.indexOf("msie") != -1); 
var mac_ie = mac && ie;
var opera = (navigator.userAgent.indexOf("Opera")!=-1);

//alert(navigator.userAgent);

function getObjNN4(obj,name)
{
	var x = obj.layers;
	var foundLayer;
	for (var i=0;i<x.length;i++)
	{
		if (x[i].id == name)
		 	foundLayer = x[i];
		else if (x[i].layers.length)
			var tmp = getObjNN4(x[i],name);
		if (tmp) foundLayer = tmp;
	}
	return foundLayer;
}

if (browser_debug==1) {	
	var browser=new Object();
	var b=new Array('ns4', 'op5', 'op6', 'agt', 'mac', 'ie', 'mac_ie');
	for (var i=0; i<b.length; i++) 
		eval("browser['"+b[i]+"']= "+b[i]);
		
	
	for (var key in browser)
		alert(key+':'+browser[key]);
}