undefined value when accessing an element by its name

In the following function I try to validate that an appropriate select value is chosen by a user. The alert popup box displays 'undefined' when I run the script. I need to get the element using its name rather than ID.

Sort table in =
<select name="SortIn">
<option value="Please Choose">Please Choose</option>
<option value="asc">Ascending order</option>
<option value="desc">Descending order</option>

<input type="submit" name="submit" value="Submit" onclick="return validateForm()"/>

<script type="text/javascript">
/* <![CDATA [ */

function validateForm()
    //Validates that form elements are not empty
            var test = document.getElementsByName('SortIn').value;
    if(test1 == null || test == "")
        alert("Please select sorting order");
        return false;
            return true;

/* ]]> */


document.getElementsByName('SortIn') returns a nodelist. You need to get the first element of that nodelist like so:

var test = document.getElementsByName('SortIn')[0].value;

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