function toggleElement(i) { 
var e = document.getElementById(i); 
if (e) {
if(e.style.display == 'none')
e.style.display = 'block';
else
e.style.display = 'none'; 
} 
}



function SetBilling(checked) {
	if (checked) {
		document.getElementById('ShippingName').value = document.getElementById('BillingName').value; 
		document.getElementById('ShippingAddress1').value = document.getElementById('BillingAddress1').value; 
		document.getElementById('ShippingAddress2').value = document.getElementById('BillingAddress2').value; 
		document.getElementById('ShippingCity').value = document.getElementById('BillingCity').value; 
		document.getElementById('ShippingState').value = document.getElementById('BillingState').value; 
		document.getElementById('ShippingZip').value = document.getElementById('BillingZip').value; 
		document.getElementById('ShippingCountry').value = document.getElementById('BillingCountry').value; 
	} else {
		document.getElementById('ShippingName').value = ''; 
		document.getElementById('ShippingAddress1').value = ''; 
		document.getElementById('ShippingAddress2').value = ''; 
		document.getElementById('ShippingCity').value = ''; 
		document.getElementById('ShippingState').value = ''; 
		document.getElementById('ShippingZip').value = ''; 
		document.getElementById('ShippingCountry').value = ''; 
	}
}



function CalculateTotal(frm) {
    var order_total = 0;
	var calc_tax = false;
	var tax=0;

    // Run through all the form fields
    for (var i=0; i < frm.elements.length; ++i) {

        // Get the current field
        form_field = frm.elements[i];

        // Get the field's name
        form_name = form_field.name;
		

        // Is it a "product" field?
        if (form_name.substring(0,4) == "PROD") {

            // If so, extract the price from the name
            item_price = parseFloat(form_name.substring(form_name.lastIndexOf("_") + 1));

            // Get the quantity
            item_quantity = parseInt(form_field.value);

            // Update the order total
            if (item_quantity >= 0) {
                order_total += item_quantity * item_price;
            } // if
        }  // if 
		
    } // for each

	salesTaxRow = document.getElementById("salesTaxRow");
	shippingState = document.getElementById("ShippingState");
	if ((shippingState.value.toUpperCase() == "NY") || (shippingState.value.toUpperCase() == "NEW YORK"))
    {
		salesTaxRow.style.visibility = 'visible';
		salesTaxRow.style.display = '';
		if(order_total > 0) {
			 nys_tax = (order_total * .07);
			 frm.salestax.value = round_decimals((nys_tax), 2);
			 order_total +=  nys_tax;}

     }else{ 
	 	salesTaxRow.style.visiblity = "hidden";
		salesTaxRow.style.display = "none";
	 	frm.salestax.value = '';}
	
    if(order_total > 0) {				
    // Display the total rounded to two decimal places
	 frm.TOTAL.value = round_decimals(order_total, 2);
	}
	else {
		frm.TOTAL.value = '';
		frm.salestax.value = '';
	}
}

function round_decimals(original_number, decimals) {
    var result1 = original_number * Math.pow(10, decimals)
    var result2 = Math.round(result1)
    var result3 = result2 / Math.pow(10, decimals)
    return pad_with_zeros(result3, decimals)
}

function pad_with_zeros(rounded_value, decimal_places) {

    // Convert the number to a string
    var value_string = rounded_value.toString()
    
    // Locate the decimal point
    var decimal_location = value_string.indexOf(".")

    // Is there a decimal point?
    if (decimal_location == -1) {
        
        // If no, then all decimal places will be padded with 0s
        decimal_part_length = 0
        
        // If decimal_places is greater than zero, tack on a decimal point
        value_string += decimal_places > 0 ? "." : ""
    }
    else {

        // If yes, then only the extra decimal places will be padded with 0s
        decimal_part_length = value_string.length - decimal_location - 1
    }
    
    // Calculate the number of decimal places that need to be padded with 0s
    var pad_total = decimal_places - decimal_part_length
    
    if (pad_total > 0) {
        
        // Pad the string with 0s
        for (var counter = 1; counter <= pad_total; counter++) 
            value_string += "0"
        }
    return value_string
}