//Written by Manuel Villanueva 5/11/05
function brokenRatio(form) {
 
var total = form.total.value;
var broken = form.broken.value;
var percent = Math.abs((((total - broken) / total) - 1) * 100);
var displayPercent = percent.toFixed(2);
var ratio = 100 / displayPercent;

if(form.broken.value==0) {
var displayRatio = "0 out of " + total;
form.percent.value = displayPercent + "%";
form.ratio.value = displayRatio;
}

else {
var displayRatio = "1 out of " + Math.floor(ratio);
form.percent.value = displayPercent +"%";
form.ratio.value = displayRatio;
}

//if statements--
if(form.total.value==""||form.total.value==0){
alert('Please enter total number DVDs.\nUse numbers only');
form.total.focus();
form.total.select();
return false
}
if(form.broken.value==""){
alert('Please enter number of broken DVDs.\nUse numbers only');
form.broken.focus();
form.broken.select();
return false
}
}