var client_info="rand="+Math.floor(Math.random()*99999999999)+"&";

var nVer = navigator.appVersion;
var nAgt = navigator.userAgent;
var browserName  = '';
var fullVersion  = 0; 
var majorVersion = 0;

// In Internet Explorer, the true version is after "MSIE" in userAgent
if ((verOffset=nAgt.indexOf("MSIE"))!=-1) {
 browserName  = "Microsoft Internet Explorer";
 fullVersion  = parseFloat(nAgt.substring(verOffset+5));
 majorVersion = parseInt(''+fullVersion);
}

// In Opera, the true version is after "Opera" 
else if ((verOffset=nAgt.indexOf("Opera"))!=-1) {
 browserName  = "Opera";
 fullVersion  = parseFloat(nAgt.substring(verOffset+6));
 majorVersion = parseInt(''+fullVersion);
}

// In Firefox, the true version is after "Firefox" 
else if ((verOffset=nAgt.indexOf("Firefox"))!=-1) {
 browserName  = "Firefox";
 fullVersion  = parseFloat(nAgt.substring(verOffset+8));
 majorVersion = parseInt(''+fullVersion);
}

// In most other browsers, "name/version" is at the end of userAgent 
else if ( (nameOffset=nAgt.lastIndexOf(' ')+1) < (verOffset=nAgt.lastIndexOf('/')) ) 
{
 browserName  = nAgt.substring(nameOffset,verOffset);
 fullVersion  = parseFloat(nAgt.substring(verOffset+1));
 if (!isNaN(fullVersion)) majorVersion = parseInt(''+fullVersion);
 else {fullVersion  = 0; majorVersion = 0;}
}

// Finally, if no name and/or no version detected from userAgent...
if (browserName.toLowerCase() == browserName.toUpperCase()
 || fullVersion==0 || majorVersion == 0 )
{
 browserName  = navigator.appName;
 fullVersion  = parseFloat(nVer);
 majorVersion = parseInt(nVer);
}
var OSName="Unknown OS";
if (navigator.appVersion.indexOf("Win")!=-1) OSName="Windows";
if (navigator.appVersion.indexOf("Mac")!=-1) OSName="MacOS";
if (navigator.appVersion.indexOf("X11")!=-1) OSName="UNIX";
if (navigator.appVersion.indexOf("Linux")!=-1) OSName="Linux";


var screenW = 640, screenH = 480;
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;
}

var winW = 630, winH = 460;

if (parseInt(navigator.appVersion)>3) {
 if (navigator.appName=="Netscape") {
  winW = window.innerWidth;
  winH = window.innerHeight;
 }
 if (navigator.appName.indexOf("Microsoft")!=-1) {
  winW = document.body.offsetWidth;
  winH = document.body.offsetHeight;
 }
}
 
client_info=client_info+'browser_name='+browserName+'&';
client_info=client_info+'full_version='+fullVersion+'&';
client_info=client_info+'major_version='+majorVersion+'&';
client_info=client_info+'appname='+escape(navigator.appName)+'&';
client_info=client_info+'user_agent='+navigator.userAgent+'&';
client_info=client_info+'os='+OSName+'&';
client_info=client_info+'screenW='+screenW+'&';
client_info=client_info+'screenH='+screenH+'&';
client_info=client_info+'winW='+winW+'&';
client_info=client_info+'winH='+winH+'&';