function calcVol(){var nsets=parseInt(document.getElementById("nsets").value)||4;var dist=parseInt(document.getElementById("dist").value)||100;var reps=parseInt(document.getElementById("reps").value)||8;var per_set=dist*reps;var total=per_set*nsets;document.getElementById("r1").textContent=total+"m";document.getElementById("r2").textContent=per_set+"m";document.getElementById("desc").innerHTML=""+nsets+" sets of "+reps+" x "+dist+"m
Per set: "+per_set+"m
Total workout: "+total+"m ("+Math.round(total/100)+" lengths of 25m)";document.getElementById("results").style.display="block";}