var isIE4 = false, isMacIE4 = false, isIE55 = false;
var isNS4 = false, isDOM = false;
var isSafari = false, isKonq = false;

var agent = navigator.userAgent.toLowerCase();

if (agent.indexOf("msie") != -1)
{
	if (agent.indexOf("mac") != -1)
		isMacIE4 = true;
	else
	{
		var version = parseFloat(agent.substr(agent.indexOf("msie")+5, 3));
		if (version >= 5.5)
			isIE55 = true;
		else
			isIE4 = true;
	}
}
else if (document.layers)
	isNS4 = true;
else if (agent.indexOf("konqueror") != -1 || document.getElementById)
	isDOM = true;
else if (agent.indexOf("safari") != -1 && agent.indexOf("mac") != -1)
	isSafari = true;

var buildDir = "includes/";

if (isIE4)
	document.write('<script type="text/javascript" src="' + buildDir + 'ie4-build.js"></script>');
else if (isMacIE4)
	document.write('<script type="text/javascript" src="' + buildDir + 'mie4-build.js"></script>');
else if (isIE55)
	document.write('<script type="text/javascript" src="' + buildDir + 'ie55-build.js"></script>');
else if (isNS4)
	document.write('<script type="text/javascript" src="' + buildDir + 'ns4-build.js"></script>');
else if (isDOM || isSafari || window.opera)
	document.write('<script type="text/javascript" src="' + buildDir + 'dom-build.js"></script>');