function set_fta() {
				var c = this.fta_g_c( '_fta' );
				if ( c !== undefined ) {
					return;
				}
				var t = Math.round( ( new Date() ).getTime() / 1e3 ),
					p = '', b = document.body;
				if ( this.fta_h_c( b, 'single-post' ) ) {
					p = 'b--';
				}

				// set first touch
				c = [];
				c[0] = t; // timestamp
				c[1] = p + location.pathname; // path
				c[2] = document.referrer;
				c[3] = location.search; //query
				this.fta_s_c( c.join( '|' ), 365 );
			}

			function fta_h_c( e, c ) {
				return ( ' ' + e.className + ' ' ).indexOf( ' ' + c + ' ' ) > - 1;
			}

			function fta_s_c( cvalue, exdays ) {
				var d = new Date();
				d.setTime( d.getTime() + (
					exdays * 24 * 60 * 60 * 1000
				) );
				var expires = 'expires=' + d.toUTCString();
				document.cookie = '_fta=' + cvalue + ';' + expires + ';path=/';
			}

			function fta_g_c( cname ) {
				var name = cname + '=',
					decodedCookie = decodeURIComponent( document.cookie ),
					ca = decodedCookie.split( ';' );
				for ( var i = 0; i < ca.length; i ++ ) {
					var c = ca[i];
					while ( c.charAt( 0 ) == ' ' ) {
						c = c.substring( 1 );
					}
					if ( c.indexOf( name ) == 0 ) {
						return c.substring( name.length, c.length );
					}
				}
				return undefined;
			}

			set_fta();