var c=[]
function rev(){
var b=false;
for(var i=0;i<c.length;i++){if(c[i].checked){b=c[i].checked;break}}
document.getElementById('details').style.display=b?'block':'none';
}
onload = function(){
var n = document.getElementsByTagName('input');
for(var i=0;i<n.length;i++){n[i].name.match(/number/)?c[c.length]=n[i]:null;}
}