function clear_form(form_name, error){
    $('#'+error).html('');
    $('#'+error).fadeOut('');
    document.forms[form_name].reset();
    $(document.forms[form_name]).find('input').attr('class', '')
}
function gen_unique_key(){
    var date = new Date();
    var key = date.getFullYear()+"_"+date.getMonth()+"_"+date.getDay()+"_"+date.getHours()+"_"
                   +date.getMinutes()+"_"+date.getMilliseconds();
    return key
}

function validateEmail(email) {
    var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    return re.test(email);
}
function accept_action(message, fun, params){
    $('#acceptModal').modal('show');
    $('[name="accept_action_button"]').on('click', function(){return fun(params), $('#acceptModal').modal('hide')});
    $('[name="accept_action_message"]').html(message);
}
function show_system_message(text){
    var block_name = 'system_message_'+gen_unique_key();
    var block =
        '<div name="'+block_name+'" class="alert alert-danger alert-dismissible fade in" role="alert">'+
        '<button type="button" class="close" data-dismiss="alert" aria-label="Close" name="'+block_name+'">' +
        '<span aria-hidden="true">×</span></button>' +
        '<p style="font-weight:bold; font-size: 18px;">' + text + '</p>' +
        '</div>';
    $('.bill_place').append(block);
    var block_obj = $('div[name="'+block_name+'"]');
    block_obj.css('display', 'block');
    $('img[name="'+block_name+'"]').click(function(){
        close_system_message(block_name)
    });
    block_obj.fadeOut(10000);
    block_obj.mouseover(function(){
        $(this).stop().css('opacity', '1');
    });
    block_obj.mouseout(function(){
        $(this).fadeOut(10000);
    })
}
function close_system_message(obj){
    $('div[name="'+obj+'"]').css('display', 'none');
}
function get_next_button(start_place_type, start_place_id){
    var response = '';
            $.ajax({
            type: 'GET',
              url: '/courses/get_next_button/',
              data: {'start_place_type': start_place_type, 'start_place_id': start_place_id},
              async: false,
              success: function(data){
                  if(data.code == '1'){
                    response = data['data'];
                  } else {
                      response = '';
                  }
              }
            });
    return response
}

function in_array(value, array) {
    for(var i=0; i<array.length; i++){
        if(value == array[i]) return true;
    }
    return false;
}

function move_asside(control) {
    var c = $(control);
    if (c.attr('opened') == '1'){
        c.attr('opened', '0');
        $('#aside').fadeOut()
            $('#content').css('margin-left', '0')

    } else {
        c.attr('opened', '1');
        $('#aside').fadeIn();
        $('#content').css('margin-left', '200px')
    }
}
function start_count(place, count, func){
    start_load(place, count, func);
    function start_load(place, count, func){
        $(place).html(count)
        if (!('count_current' in window)){
            window.count_current = count;
        }
        window.load_process_interval = setInterval( function(){check_finish(place, count, func);}, 1000);
    }
    function stop_load_process(func){
        clearInterval(window.load_process_interval);
        delete window.load_process_interval;
        func();
    }
    function check_finish(place, count, func){
        if (window.count_current == 0){
            stop_load_process(func);
        } else {
            window.count_current -=1;
            $(place).html(window.count_current)
        }
    }
}