var detect = navigator.userAgent.toLowerCase();
	var OS,browser,version,total,thestring, s;
	
	if (checkIt('konqueror'))
	{
		browser = "Konqueror";
		OS = "Linux";
	}
	else if (checkIt('safari')) browser = "Safari"
	else if (checkIt('omniweb')) browser = "OmniWeb"
	else if (checkIt('opera')) browser = "Opera"
	else if (checkIt('webtv')) browser = "WebTV";
	else if (checkIt('icab')) browser = "iCab"
	else if (checkIt('msie')) browser = "Internet Explorer"
	else if (!checkIt('compatible'))
	{
		browser = "Netscape Navigator"
		version = detect.charAt(8);
	}
	else browser = "An unknown browser";
	
	if (!version) version = detect.charAt(place + thestring.length);
	
	if (!OS)
	{
		if (checkIt('linux')) OS = "Linux";
		else if (checkIt('x11')) OS = "Unix";
		else if (checkIt('mac')) OS = "Mac"
		else if (checkIt('win')) OS = "Windows"
		else OS = "an unknown operating system";
	}
	
	function checkIt(string)
	{
		place = detect.indexOf(string) + 1;
		thestring = string;
		return place;
	}
	



//get screen size
var screenW = 640, screenH = 480;
var shellWidth = "779px", shellHeight = "auto";

	if (parseInt(navigator.appVersion)>3) 
	{
	 screenW = screen.width;
	 screenH = screen.height;
	}
else if (navigator.appName == "Netscape" && parseInt(navigator.appVersion)==3 && navigator.javaEnabled()) 
	{
	 var jToolkit = java.awt.Toolkit.getDefaultToolkit();
	 var jScreenSize = jToolkit.getScreenSize();
	 screenW = jScreenSize.width;
	 screenH = jScreenSize.height;
	}

if ( screenW >= 1024 )
	{
		shellWidth = "850px";
	}

// IE height correction
if (OS == "Windows") {
	if (browser == "Internet Explorer") {
		shellHeight = "575px";
		}
	} 
		
s = "<style type=\"text/css\">"
	+ "#siteShell { width:"+ shellWidth +"; min-width:"+ shellWidth +"; }"
	+ "#mainShell { height:"+ shellHeight +";}"
	+ "</style>";

document.write(s);