function selectCode1(nr){var elemCode1 = document.getElementById("code_1");var elemCode2 = document.getElementById("code_2");if(nr == 1){elemCode1.style.display = "block";elemCode2.style.display = "none";} else if(nr == 2){elemCode1.style.display = "none";elemCode2.style.display = "block";}}function selectCode2(nr){var elemCode3 = document.getElementById("code_3");var elemCode4 = document.getElementById("code_4");if(nr == 3){elemCode3.style.display = "block";elemCode4.style.display = "none";} else if(nr == 4){elemCode3.style.display = "none";elemCode4.style.display = "block";}}function selectCode3(nr){var elemCode5 = document.getElementById("code_5");var elemCode6 = document.getElementById("code_6");var elemCode7 = document.getElementById("code_7");if(nr == 5){elemCode5.style.display = "block";elemCode6.style.display = "none";elemCode7.style.display = "none";} else if(nr == 6){elemCode5.style.display = "none";elemCode6.style.display = "block";elemCode7.style.display = "none";} else if(nr == 7){elemCode5.style.display = "none";elemCode6.style.display = "none";elemCode7.style.display = "block";}}