//kenny kaane ken@kennykaane.org kennykaane.org
// validates that the field value string has one or more characters in it
function isNotEmpty(elem) {
    var str = elem.value;
    if(str == "" || str == " ") {
        alert("Please fill in the required field.");
        return false;
    } else {
        return true;
    }
}

function isNumber(elem) {
    var str = elem.value;
    var re = /^[-]?\d*\.?\d*$/;
    str = str.toString( );
    if (!str.match(re)) {
		elem.value = "";
        alert("Enter only numbers into the field.");
        return false;
    }
    return true;
}

function validateForm(form) {
  if (isNotEmpty(form.loanAmount)) {
	 if (isNotEmpty(form.interestRate)) {
	  if (isNotEmpty(form.paymentsNo)) {}
	 }
  }
}