function locateCategory(textBox) {
    window_left = (screen.width - 400) / 2;
    window_top = (screen.height - 400) / 2;
    params = "width=400,height=400,top="+window_top+",left="+window_left;
    window.open("getcategories.do", "windowGetCategory", params);
}

function selectCatagory(newValue) {
    if(window.opener)
        window.opener.document.getElementById("txtCategory").value = newValue;
    else
        alert('Parent window has been closed');
    window.close();
}