$("#regioni area").mouseover( function() {
    $("#div_regioni").css("background-image", "url(/images/regioni/" + $(this).attr("id") + "_selected.gif)");
    $("#tooltip").html($(this).attr("title"));
});
$("#regioni area").mouseout( function() {
    $("#div_regioni").css("background-image", "url(/images/transparent.gif)");
    $("#tooltip").html(" ");
});
$("#province area").mouseover( function() {
    $("#province").css( "background-image", "url(/images/prov/select_prov_" + $(this).attr("id") + ".gif)" );
    $("#province").css( "background-repeat", "no-repeat" );
    $("#tooltip").html($(this).attr("title"));
});
$("#province area").mouseout( function() {
    $("#province").css( "background-image", "url(/images/trasparent.gif)" );
    $("#tooltip").html(" ");
});