function init_search() {
    
    $("#search_txt").focusin(function() {
         $('#search').css('background-position', '0 52px');
    });
    
    $("#search_txt").focusout(function() {
         if($('#search_txt').val() == '')
            $('#search').css('background-position', '0 0');
    });
}


//MAIN
$(function(){
    init_search();
});