$(document).ready(function() {
	
		$('.switch span.en').click(function(){
			$('.switch span').removeClass('selected');
			$(this).addClass('selected');
			$('.chinese').hide();
			$('.english').fadeIn();
		});
		$('.switch span.chin').click(function(){
			$('.switch span').removeClass('selected');
			$(this).addClass('selected');
			$('.english').hide();
			$('.chinese').fadeIn();
		});
        $('.english').hide();
        
        $('.head img').load(function(){$('.head').animate({"top": "112px"}, "fast");})
        
        
        $('.head').hover(function(){
        	$(this).stop().animate({"top": "218px"}, "fast");
        },function(){
        	$(this).stop().animate({"top": "112px"}, "fast");
        });
        
                $('.go_left').fadeTo("fast", 0.4);
$('.go_left').click(function(e){
    var $target = $(e.target);
    var $s = $('#slide_content');
  if (parseInt($s.css('marginLeft')) < 0 ) {
      $('.go_right').fadeTo("fast", 1);
        $s.animate({marginLeft: "+=600px"}, 400, function() {
            if (parseInt($s.css('marginLeft')) == 0) {
                $target.fadeTo("fast", 0.4);

            }
        });
    }
});
 
$('.go_right').click(function(e){
    var $target = $(e.target);
    var blocks = $('#slide_content .block').length;
    var boundary = -600 * (blocks - 2);
    
    var $s = $('#slide_content');
    if (parseInt($s.css('marginLeft')) > boundary) {
        $('.go_left').fadeTo("fast", 1);
        $s.animate({marginLeft: "-=600px"}, 400, function(){
            if (parseInt($s.css('marginLeft')) == boundary) {
                $target.fadeTo("fast", 0.4);
            }
        });
    }
});

        
});