//Written by Manuel Villanueva
function basic_time(form) {
var answer = form.volume.value / form.rate.value;
form.answer.value = Math.round(100*answer)/100;   
//if statements--
if(form.volume.value==""){
alert('Please enter volume (mL)');
form.volume.focus();
form.volume.select();
return false
}
if(form.rate.value==""){
alert('Please enter cc/hr');
form.rate.focus();
form.rate.select();
return false
}
}