function changeDiv(the_div,the_change){
var the_style=getStyleObject(the_div)
if(the_style !=false){
the_style.display=the_change}}
function hideAll(){
changeDiv("return","none")}
function hideAll2(){
changeDiv("toair","none")
changeDiv("fromair","none")
changeDiv("airtoair","none")
changeDiv("flightnumber","none")
changeDiv("toair2","none")
changeDiv("fromair2","none")
changeDiv("airtoair2","none")}
function hideAll3(){
if(document.getElementById("attrib-3-1").checked==true){
changeDiv("childage","block")}
if(document.getElementById("attrib-3-1").checked==false){
changeDiv("childage","none")}}
function getStyleObject(objectId){
if(document.getElementById&&document.getElementById(objectId)){
return document.getElementById(objectId).style
}else if(document.all&&document.all(objectId)){
return document.all(objectId).style
}else{
return false}}