function froi_tr() {
	var referrer = document.referrer;

	var protocol = window.location.protocol;

	var hostName   = 't.firstroi.com';
	var devDomains = [ 'devsite.1stroi.com', 'dev.checkingfinder.com', 'kasasadev.1stroi.com', 'inmo.1stroi.com', 'firstsiteinmo.1stroi.com' ];

	for ( var i = 0; i < devDomains.length; i++ ) {
		if (window.location.hostname === devDomains[i] ) {
			hostName = 'tdev.1stroi.com';
		}
	}
	
	var date = new Date();
	var src = protocol + "//"+ hostName +"/js/t.js.php?r=" + escape(referrer) + '&t=' + date.getTime();
	
	var head    = document.getElementsByTagName('head')[0];
	var script  = document.createElement('script');
	script.type = 'text/javascript';
	script.src  = src;
	head.appendChild( script );
}