function setPeriod(period)
                {
                    if (period == 30){
                        document.getElementById('pfts_block').src = "/extensions/cfonds/frontend/graphics/pfts.php?d=1";
                        document.getElementById('pfts_l_1').style.fontWeight = "bold";
                        document.getElementById('pfts_l_2').style.fontWeight = "normal";
                        document.getElementById('pfts_l_3').style.fontWeight = "normal";
                        document.getElementById('pfts_l_4').style.fontWeight = "normal";
                    } else if (period == 180){
                        document.getElementById('pfts_block').src = "/extensions/cfonds/frontend/graphics/pfts.php?d=2";
                        document.getElementById('pfts_l_1').style.fontWeight = "normal";
                        document.getElementById('pfts_l_2').style.fontWeight = "bold";
                        document.getElementById('pfts_l_3').style.fontWeight = "normal";
                        document.getElementById('pfts_l_4').style.fontWeight = "normal";
                    } else if (period == 360){
                        document.getElementById('pfts_block').src = "/extensions/cfonds/frontend/graphics/pfts.php?d=3";
                        document.getElementById('pfts_l_1').style.fontWeight = "normal";
                        document.getElementById('pfts_l_2').style.fontWeight = "normal";
                        document.getElementById('pfts_l_3').style.fontWeight = "bold";
                        document.getElementById('pfts_l_4').style.fontWeight = "normal";
                    } else {
                        document.getElementById('pfts_block').src = "/extensions/cfonds/frontend/graphics/pfts.php?d=4";
                        document.getElementById('pfts_l_1').style.fontWeight = "normal";
                        document.getElementById('pfts_l_2').style.fontWeight = "normal";
                        document.getElementById('pfts_l_3').style.fontWeight = "normal";
                        document.getElementById('pfts_l_4').style.fontWeight = "bold";
                    }
                }