function getPassiveFields () {
	
		var screenRes = screen.width + "x" + screen.height;
		if (screenRes == null || screenRes == "" || screenRes == undefined)
			screenRes = 'NAxNA';
		var b_version=navigator.appVersion;
		var version=parseFloat(b_version); //version number only
		var CPUClass=navigator.cpuClass; //0x86
		if (CPUClass==null || CPUClass=="undefined")
			CPUClass = "NA";
		var platform=navigator.platform //example: Win32
		var systemLanguage = navigator.systemLanguage; // en-us
		if (systemLanguage==null || systemLanguage==undefined)
			systemLanguage = "NA";
		var hostName = location.hostname; //example: www.google.com
		var isCookiesEnabled = (navigator.cookieEnabled?1:0); //is cookie enabled
		var pageNum = history.length; //history from opened browser
		//---time stamp---
		var ts = new Date();
		var timeStamp;
		var year = ts.getYear();
		if (year < 2000) year = 1900 + year;
		var month = ts.getMonth()+1;
		var day = ts.getDate();
		var hours = ts.getHours();
		var minutes = ts.getMinutes();
		var seconds = ts.getSeconds();
		if (seconds==null || seconds=="")
			seconds=="00";
		timeStamp = month + "/" + day + "/" + year + " " + hours + ":" + minutes + ":" + seconds;
		//---end timestamp---
		
		//---browser name---
		var userAgent = navigator.userAgent; 
		if (userAgent.indexOf("Avant")!=-1) userAgent = "Avant";
		else if (userAgent.indexOf("MSIE")!=-1) userAgent = "MSIE";
		else if (userAgent.indexOf("Opera")!=-1) userAgent = "Opera";
		else if (userAgent.indexOf("Firefox")!=-1) userAgent = "Firefox";
		else userAgent = "Other";
		//--end browser name
		
		var toPass = "&browser_name=" + escape(userAgent) + "&browser_ver=" + escape(version) + "&host_name=" + escape(hostName) + "&java_en=1" + "&platform_name=" + escape(platform) + "&cpu_class=" + escape(CPUClass) + "&cookies=" + escape(isCookiesEnabled) + "&sys_lang=" + escape(systemLanguage) + "&time_stamp=" + escape(timeStamp) + "&screen_res=" + escape(screenRes) + "&pages_num=" + escape(pageNum);
		document.address_info.hiddenTextBox.value = toPass;
		//alert(document.address_info.hiddenTextBox.value);
}