var fg_js_variables = new Array();

function fg_js_get(var_name)
{
    if (var_name==null) throw new Exception("Variable name is null in fg_js_get.");
    return fg_js_variables[var_name];
}

function fg_js_set(var_name,value)
{
    fg_js_variables[var_name] = value;
    //alert("Variable '"+var_name+"' set to : "+value);
}

function fg_js_update_class(id_elem,style_class)
{
    $("#"+id_elem).attr("class",style_class);
}

function fg_js_update_class_if_not(id_elem,style_class,not_equals_to)
{
    var current_class = $("#"+id_elem).attr("class");
    if (current_class!=not_equals_to)
        fg_js_update_class(id_elem,style_class);
}