function go(f) {
   var l = f.l.value;
   var d = f.d.value;
   var h = f.h.value;
   var vol = l*d*h;
   var v = vol.toFixed(3);

   f.v.value = v;
}


function calc(f) {

var q = f.q.value;

var v = f.v.value;

var N = 0;

var NMIN = 0;

var T = 0;

var TSEC = 0;



N=(3600*q)/v;

NMIN=N/60;

T=1/NMIN;

TSEC=T*60;



resone = N.toFixed(3);

restwo = NMIN.toFixed(3);

resthree = T.toFixed(3);

resfour = TSEC.toFixed(3);



f.results.value = "Air change rate in changes per hour:   ";

f.results.value += resone +"\n";

f.results.value += "Air change rate in changes per minute: ";

f.results.value += restwo +"\n";

f.results.value += "Time for one change in minutes:        ";

f.results.value += resthree +"\n"

f.results.value += "Time for one change in seconds:        ";

f.results.value += resfour +"\n";

}


function clearform()

{

document.f.reset();

return true;

}