function updateQty(elem){var amount=basePrice*elem.value; document.getElementById("amountac").innerHTML=amount; switch (elem.value){ case "1": document.getElementById("tickets").value=1; document.getElementById("numtickets").innerHTML="1"; document.getElementById("extrafields").style.display='none'; document.getElementById("first2").style.display='none'; document.getElementById("first3").style.display='none'; document.getElementById("first4").style.display='none'; document.getElementById("first5").style.display='none'; document.getElementById("passes").innerHTML=pass; document.getElementById("firstname2").value=''; document.getElementById("lastname2").value=''; document.getElementById("title2").value=''; document.getElementById("company2").value=''; document.getElementById("email2").value=''; document.getElementById("firstname3").value=''; document.getElementById("lastname3").value=''; document.getElementById("title3").value=''; document.getElementById("company3").value=''; document.getElementById("email3").value=''; document.getElementById("firstname4").value=''; document.getElementById("lastname4").value=''; document.getElementById("title4").value=''; document.getElementById("company4").value=''; document.getElementById("email4").value=''; document.getElementById("firstname5").value=''; document.getElementById("lastname5").value=''; document.getElementById("title5").value=''; document.getElementById("company5").value=''; document.getElementById("email5").value=''; break; case "2": document.getElementById("tickets").value=2; document.getElementById("numtickets").innerHTML="2"; document.getElementById("extrafields").style.display='block'; document.getElementById("first2").style.display='block'; document.getElementById("first3").style.display='none'; document.getElementById("first4").style.display='none'; document.getElementById("first5").style.display='none'; document.getElementById("passes").innerHTML=passes; document.getElementById("firstname3").value=''; document.getElementById("lastname3").value=''; document.getElementById("title3").value=''; document.getElementById("company3").value=''; document.getElementById("email3").value=''; document.getElementById("firstname4").value=''; document.getElementById("lastname4").value=''; document.getElementById("title4").value=''; document.getElementById("company4").value=''; document.getElementById("email4").value=''; document.getElementById("firstname5").value=''; document.getElementById("lastname5").value=''; document.getElementById("title5").value=''; document.getElementById("company5").value=''; document.getElementById("email5").value=''; break; case "3": document.getElementById("tickets").value=3; document.getElementById("numtickets").innerHTML="3"; document.getElementById("extrafields").style.display='block'; document.getElementById("first2").style.display='block'; document.getElementById("first3").style.display='block'; document.getElementById("first4").style.display='none'; document.getElementById("first5").style.display='none'; document.getElementById("passes").innerHTML=passes; document.getElementById("firstname4").value=''; document.getElementById("lastname4").value=''; document.getElementById("title4").value=''; document.getElementById("company4").value=''; document.getElementById("email4").value=''; document.getElementById("firstname5").value=''; document.getElementById("lastname5").value=''; document.getElementById("title5").value=''; document.getElementById("company5").value=''; document.getElementById("email5").value=''; break; case "4": document.getElementById("tickets").value=4; document.getElementById("numtickets").innerHTML="4"; document.getElementById("extrafields").style.display='block'; document.getElementById("first2").style.display='block'; document.getElementById("first3").style.display='block'; document.getElementById("first4").style.display='block'; document.getElementById("first5").style.display='none'; document.getElementById("passes").innerHTML=passes; document.getElementById("firstname5").value=''; document.getElementById("lastname5").value=''; document.getElementById("title5").value=''; document.getElementById("company5").value=''; document.getElementById("email5").value=''; break; case "5": document.getElementById("tickets").value=5; document.getElementById("numtickets").innerHTML="5"; document.getElementById("extrafields").style.display='block'; document.getElementById("first2").style.display='block'; document.getElementById("first3").style.display='block'; document.getElementById("first4").style.display='block'; document.getElementById("first5").style.display='block'; document.getElementById("passes").innerHTML=passes; break; } }