function load_dancer_tab (link,tab,dancer_id){
var statusElem = $("#"+tab) ;

$.ajax({

     url: link,             // указываем URL и
    beforeSend: function( xhr ) {
   	statusElem.innerHTML="Please, wait...";
  },
     success: function (data, textStatus) { // вешаем свой обработчик на функцию success
		statusElem.html(data);
		
		
		if (tab=="section_1"){
		//	initialize_personal_card();
		}
		if (tab=="section_2"){
//			$("#register_list").remove();
//			initialize_registration_multiple_datatable(dancer_id);
		}
		if (tab=="section_3"){
//			initialize_datatables_teams(dancer_id);
		}


     } 
});

}

function initialize_personal_card(){

	$(".splash_screen").remove();
	$("#section_1").prepend("<div style='height:"+screen.height+"px' class='splash_screen'  ></div>");

	$.ajax({
			     url: "actions.php",
			     async:false,
			     data: { flag:"personal_card" },
			     type:'post',
			     success: function (data, textStatus) { 
					a_id=data.split("_")[0];
					u_id=data.split("_")[1];
					$("#section_1").html(show_summary_dances(a_id,u_id,u_id));

					if (a_id!=""){
						if ( $.fn.dataTable.isDataTable( ".dances_selection_for_student" ) ) {
							dances_table = $( ".dances_selection_for_student" ).DataTable();
							dances_table.destroy();

						}
						$(".dances_selection_for_student").DataTable({
							"lengthChange": false,
							"searching": false,
							"ordering": false,
							"info": false,
							"autoWidth": false,
							"fnDrawCallback":function(){
							      table_id=$(this).attr('id');

							     $('#'+table_id+'_paginate')[0].style.display = "none";
							    $('#'+table_id).find('input').prop('disabled',true);
							    $('.save_button').remove();
							},
						});
						$.ajax({	
						     url: "../teacher/actions.php",    async:false,     data: { flag:"load_saved_dances",dancer_id: a_id },	     type:'post',
						     success: function (data, textStatus) { 
							if (data!='null'){
								data=JSON.parse(data);
								for (i=0;i<data.length;i++){$("#"+data[i]).prop("checked",true);}
							}  }  });

						};



			   }
		});
		$(".splash_screen").fadeOut("slow");

}

/*
function show_resume_user (id) {


var showElem=document.getElementById('section_1');

var req =  new XMLHttpRequest();

	req.onreadystatechange = function() {  
   	   if (req.readyState == 4) { 
		showElem.innerHTML = req.responseText; 
		if(req.status != 200) { 
			alert(""+req.statusText);
		}
	   }
	}

var params="dancer_id="+id;

	req.open('POST', 'actions.php', true);  
	req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	req.send(params);
	showElem.innerHTML=" ";
}
*/