function selectMainContent4_2_1(idx){

  $('main_content4_2_1_1').addClass('hide');
  $('main_content4_2_1_2').addClass('hide');
  $('main_content4_2_1_3').addClass('hide');
  $('main_content4_2_1_4').addClass('hide');
  $('main_content4_2_1_5').addClass('hide');
  $('main_content4_2_1_6').addClass('hide');
  $('main_content4_2_1_'+idx).removeClass('hide');

  $('main_content4_2_1_1_tab').removeClass('selected');
  $('main_content4_2_1_2_tab').removeClass('selected');
  $('main_content4_2_1_3_tab').removeClass('selected');
  $('main_content4_2_1_4_tab').removeClass('selected');
  $('main_content4_2_1_5_tab').removeClass('selected');
  $('main_content4_2_1_6_tab').removeClass('selected');
  $('main_content4_2_1_'+idx+'_tab').addClass('selected');
}

function selectMainContent4_2_2(idx){
  $('main_content4_2_2_1').addClass('hide');
  $('main_content4_2_2_2').addClass('hide');
  $('main_content4_2_2_3').addClass('hide');
  $('main_content4_2_2_4').addClass('hide');
  $('main_content4_2_2_5').addClass('hide');
  $('main_content4_2_2_6').addClass('hide');
  $('main_content4_2_2_'+idx).removeClass('hide');
                   
  $('main_content4_2_2_1_tab').removeClass('selected');
  $('main_content4_2_2_2_tab').removeClass('selected');
  $('main_content4_2_2_3_tab').removeClass('selected');
  $('main_content4_2_2_4_tab').removeClass('selected');
  $('main_content4_2_2_5_tab').removeClass('selected');
  $('main_content4_2_2_6_tab').removeClass('selected');
  $('main_content4_2_2_'+idx+'_tab').addClass('selected');
}                  

function selectMainContent4_2_3(idx){
  $('main_content4_2_3_1').addClass('hide');
  $('main_content4_2_3_2').addClass('hide');
  $('main_content4_2_3_3').addClass('hide');
  $('main_content4_2_3_4').addClass('hide');
  $('main_content4_2_3_5').addClass('hide');
  $('main_content4_2_3_6').addClass('hide');
  $('main_content4_2_3_'+idx).removeClass('hide');
                   
  $('main_content4_2_3_1_tab').removeClass('selected');
  $('main_content4_2_3_2_tab').removeClass('selected');
  $('main_content4_2_3_3_tab').removeClass('selected');
  $('main_content4_2_3_4_tab').removeClass('selected');
  $('main_content4_2_3_5_tab').removeClass('selected');
  $('main_content4_2_3_6_tab').removeClass('selected');
  $('main_content4_2_3_'+idx+'_tab').addClass('selected');
}                    

function selectMainContent2_1(idx){
  $('main_content2_1_1').addClass('hide');
  $('main_content2_1_2').addClass('hide');
  $('main_content2_1_3').addClass('hide');
  $('main_content2_1_4').addClass('hide');
  $('main_content2_1_5').addClass('hide');
  $('main_content2_1_6').addClass('hide');
  $('main_content2_1_'+idx).removeClass('hide');
                   
  $('main_content2_1_1_tab').removeClass('selected');
  $('main_content2_1_2_tab').removeClass('selected');
  $('main_content2_1_3_tab').removeClass('selected');
  $('main_content2_1_4_tab').removeClass('selected');
  $('main_content2_1_5_tab').removeClass('selected');
  $('main_content2_1_6_tab').removeClass('selected');
  $('main_content2_1_'+idx+'_tab').addClass('selected');
}

window.addEvent('domready', function() {
  $('main_content4_2_1_1_tab').addEvent('mouseover', function(){selectMainContent4_2_1(1);});
  $('main_content4_2_1_2_tab').addEvent('mouseover', function(){selectMainContent4_2_1(2);});
  $('main_content4_2_1_3_tab').addEvent('mouseover', function(){selectMainContent4_2_1(3);});
  $('main_content4_2_1_4_tab').addEvent('mouseover', function(){selectMainContent4_2_1(4);});
  $('main_content4_2_1_5_tab').addEvent('mouseover', function(){selectMainContent4_2_1(5);});
  $('main_content4_2_1_6_tab').addEvent('mouseover', function(){selectMainContent4_2_1(6);});

  $('main_content4_2_2_1_tab').addEvent('mouseover', function(){selectMainContent4_2_2(1);});
  $('main_content4_2_2_2_tab').addEvent('mouseover', function(){selectMainContent4_2_2(2);});
  $('main_content4_2_2_3_tab').addEvent('mouseover', function(){selectMainContent4_2_2(3);});
  $('main_content4_2_2_4_tab').addEvent('mouseover', function(){selectMainContent4_2_2(4);});
  $('main_content4_2_2_5_tab').addEvent('mouseover', function(){selectMainContent4_2_2(5);});
  $('main_content4_2_2_6_tab').addEvent('mouseover', function(){selectMainContent4_2_2(6);});
                                                                             
  $('main_content4_2_3_1_tab').addEvent('mouseover', function(){selectMainContent4_2_3(1);});
  $('main_content4_2_3_2_tab').addEvent('mouseover', function(){selectMainContent4_2_3(2);});
  $('main_content4_2_3_3_tab').addEvent('mouseover', function(){selectMainContent4_2_3(3);});
  $('main_content4_2_3_4_tab').addEvent('mouseover', function(){selectMainContent4_2_3(4);});
  $('main_content4_2_3_5_tab').addEvent('mouseover', function(){selectMainContent4_2_3(5);});
  $('main_content4_2_3_6_tab').addEvent('mouseover', function(){selectMainContent4_2_3(6);});
                                                                                     
  $('main_content2_1_1_tab').addEvent('mouseover', function(){selectMainContent2_1(1);});
  $('main_content2_1_2_tab').addEvent('mouseover', function(){selectMainContent2_1(2);});
  $('main_content2_1_3_tab').addEvent('mouseover', function(){selectMainContent2_1(3);});
  $('main_content2_1_4_tab').addEvent('mouseover', function(){selectMainContent2_1(4);});
  $('main_content2_1_5_tab').addEvent('mouseover', function(){selectMainContent2_1(5);});
  $('main_content2_1_6_tab').addEvent('mouseover', function(){selectMainContent2_1(6);});
                                                                                     
  new mooquee($('scroll_images_1'),{direction: 'left'});
});