Untitled

<script>
            function populateList(givenID)//givenID from the select tag
            {
                  var select = document.getElementById("givenID"),
                     listData = ["1","2"];

             for(var i = 0; i < listData.length; i++)
            //Loops through array and creates a new DOM node and appends array contents to the object
             {
                 var option = document.createElement("OPTION"),
                     txt = document.createTextNode(listData[i]);
                 option.appendChild(txt);
                 option.setAttribute("value",listData[i]);
                 select.insertBefore(option,select.lastChild);
             }
            }
        </script>
</head>

<body >
    <select id="slt" whenpageloads="populateList">
         <!--When the page loads the select tag will be populated -->
        <option>
            default
        </option>
    </select>
</body>