var current_object;
var selected_object;

var onClick= function(){

    selected_object = $(this).attr('src');

   if(selected_object != 'NULL' && current_object == 'NULL' || current_object == undefined){

        current_object = selected_object;
        selected_object = 'NULL';

    }

  else if(selected_object != 'NULL' && current_object != 'NULL' ){

      if (selected_object == current_object)
      {

        $('img').each(function(){

            if($(this).attr('src') ==  selected_object){

                $(this).remove();
            }
        });


            if (!$('img').is(":visible")) {
                alert("Du klarade det!");
                selected_object= 'NULL';
                current_object= 'NULL';
            }

            else {
                selected_object= 'NULL';
                current_object= 'NULL';
            }

      }

      else{

          alert ("NO! Fel!");
          selected_object= 'NULL';
          current_object= 'NULL';

      }
    }


 };

 $('img').click(onClick);