//Define function to manipulate the form total per item selected/deselected:
function CheckChoice(whichbox) {
with (whichbox.form) {
//Handle differently, depending on type of input box.
if (whichbox.type == "radio") {
//First, back out the prior radio selection's price from the total:
hiddentotal.value = eval(hiddentotal.value) - eval(hiddenpriorradio.value);
//Then, save the current radio selection's price:
hiddenpriorradio.value = eval(whichbox.price);
//Now, apply the current radio selection's price to the total:
//hiddentotal.value = eval(hiddentotal.value) + eval(whichbox.price);
hiddentotal.value = eval(hiddentotal.value) + 1;
}
else {
//If box was checked, accumulate the checkbox value as the form total,
//Otherwise, reduce the form total by the checkbox value:
if (whichbox.checked == false) {
hiddentotal.value = eval(hiddentotal.value) - 1;
}
else {
hiddentotal.value = eval(hiddentotal.value) + 1;
   }
}
//Ensure the total never goes negative (some browsers allow radiobutton to be deselected):
if (hiddentotal.value < 0) {
InitForm();
}
//Now, return with formatted total:
return(formatCurrency(hiddentotal.value));
   }
}
//Define function to format a value as currency:
function formatCurrency(num) {
num = num.toString().replace(/\$|\,/g,'');
if(isNaN(num)) num = "0";
cents = Math.floor((num*100+0.5)%100);
num = Math.floor((num*100+0.5)/100).toString();
if(cents < 10) cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
num = num.substring(0,num.length-(4*i+3))+','+num.substring(num.length-(4*i+3));
return (num);
return ("$" + num + "." + cents);
}
//Define function to init the form on reload:
function InitForm() {
//Reset the displayed total on form:
document.myform.total.value='0';
document.myform.hiddentotal.value=0;
document.myform.hiddenpriorradio.value=0;
//document.myform2.total.value='0';
//document.myform2.hiddentotal.value=0;
//document.myform2.hiddenpriorradio.value=0;
//document.myform2.hiddenpriorradio.value=0;
//Set all checkboxes and radio buttons on form-1 to unchecked:
for (xx=0; xx < document.myform.elements.length; xx++) {
if (document.myform.elements[xx].type == 'checkbox' | document.myform.elements[xx].type == 'radio') {
document.myform.elements[xx].checked = false;
   }
}
//Set all checkboxes and radio buttons on form-2 to unchecked:
//for (xx=0; xx < document.myform2.elements.length; xx++) {
//if (document.myform2.elements[xx].type == 'checkbox' | document.myform2.elements[xx].type == 'radio') {
//document.myform2.elements[xx].checked = false;
 //     }
 //  }
}
//  End -->