var ns4=document.layers
var ie4=document.all
var ns6=document.getElementById&&!document.all

function hidebox(){
crossobj=ns6? document.getElementById("infolayer") : document.all.infolayer
if (ie4||ns6)
crossobj.style.visibility="hidden"
else if (ns4)
document.showimage.visibility="hide"
}
function hidetirebox(){
crossobj=ns6? document.getElementById("infolayertire") : document.all.infolayertire
if (ie4||ns6)
crossobj.style.visibility="hidden"
else if (ns4)
document.showimage.visibility="hide"
}
function showbox(){
crossobj=ns6? document.getElementById("infolayer") : document.all.infolayer
if (ie4||ns6)
crossobj.style.visibility="visible"
else if (ns4)
document.showimage.visibility="visible"
}
function showtirebox(){
crossobj=ns6? document.getElementById("infolayertire") : document.all.infolayertire
if (ie4||ns6)
crossobj.style.visibility="visible"
else if (ns4)
document.showimage.visibility="visible"
}