I am newbie to javascript I trying to code conditions for currency change based on shipping country but getting error for all conditions.

Conditions

if the country is India and currency is Indian Rupees - Proceed to next page
if the country is India and currency is not India Rupees - alert as "Change currency as Indian Rupees"
if the country is not India and currency is India Rupees - alert as "Change currency as other than Indian Rupees"
if the country is not India and currency is not Indian Rupees - Proceed to next page

Help me to correct the error.

Thanks in advance.

Code:
<div id="navMainSearch" style="height: 50px; margin-top: 18px; margin-bottom: -15px;">
        <form method="get" action="" name="currencies">
            <select id="money" onchange="" name="currency">
                <option value="USD">US Dollar</option>
                <option value="EUR">Euro</option>
                <option value="GBP">British Pound Sterling</option>
                <option value="CAD">Canadian Dollar</option>
                <option value="AUD">Australian Dollar</option>
                <option value="INR">Indian Rupees</option>
            </select>
            <input type="hidden" value="checkout" name="main_page">
            <input type="hidden" name="fecaction">
        </form>
    </div>
    <div id="checkoutShipto" class="floatingBox back">
<address class="checkoutAddress">
Raja 
<br>
423, Vinayagar Kovil Street
<br>
Chennai, 600027
<br>
TN,India<div id="location">India</div>
</address>

    </div>
    <div class="buttonRow forward">
        <input type="submit" onclick="submitFunction()" title="Confirm Order " alt="Confirm Order" value="submit" act>
    </div>
    </div>
    <script type="text/javascript">
function submitFunction() {
    var country = document.getElementById("location").innerText;
    var currency = document.getElementById("money").innerText;
    if (country == 'India' && currency == 'INR') {
        window.location.assign("thanks.html");
    } else if (country == 'India' && currency != 'INR') {
        alert("Change the currency as Indian Rupee ");
    } else if (country != 'India' && currency == 'INR') {
        alert("Change the currency as other than Indian Rupee ");
    } else {
        window.location.assign("thanks.html ");
    }

}
</script>