function check_participation() {

  var t = false;


  if ($("#workshop_block").attr('checked')) t = true;

  if ($("#congress_block").attr('checked')) t = true;

  if ($("#lectures_block").attr('checked')) t = true;

  if ($("#party_block").attr('checked')) t = true;



  if (t) {

    $('div.nav div.disabled').addClass('off');

    $('div.nav #button_next').attr('disabled', '');

  } else {

    $('div.nav div.disabled').removeClass('off');

    $('div.nav #button_next').attr('disabled', 'yes');

  }

}





function calc_total() {

  var divs = $("#participation_form").find('div.selected');

  var div;

  var sum = 0;

  var mult = 1;

  var value = '';



  for(var i=0; i<$(divs).size(); i++) {



    div = $(divs).get(i);      



    mult = 1;

    if ($(div).find('.checkbox').attr('id')=='party_block') mult = $("#party_persons").val();   

  

    value = $(div).find('.pricevalue').text();  



    if (value!='' && !isNaN(value)) sum += parseInt(value) * mult;

  

  }                                                 

  $("#total").find('.price').text('DKK '+ parseNum(sum));

}





function parseNum(n) {    // get the number in danish format: 12,345,678.00

  var s = '';

  var d = addLeadZero(100*(n-Math.floor(n)),9);   

  var d1;



  n = Math.floor(n);



  while (n>0) {

    d1 = n - Math.floor(n/1000)*1000;

    d1 = addLeadZero(d1,9);

    d1 = addLeadZero(d1,99);



    s = d1 + ',' + s;

    n = Math.floor(n/1000);

  }

  s = s.replace(/^0+/,'');

  if (s=='') s = '0,';

  

  return s.substr(0,s.length-1)+'.'+d;

}



function addLeadZero(d,m) {

  if (d<m) d = '0' + d;

  return d;

}



function toggle_participation(elem,num) {


  var part = $(elem).parents("div[@class^='part']");       


  if ((num==2 || num==3) && !$("#workshop_block").attr('checked'))  {

    $("#workshop_student").attr('checked','');

    $("#workshop_student_discount").removeClass('selected');

    if (num==3) $(elem).blur();

    return false;

  }

if ((num==1003 || num==1004) && !$("#congress_block").attr('checked'))  {

    $("#congress_student").attr('checked','');

    $("#congress_student_discount").removeClass('selected');

    if (num==1004) $(elem).blur();

    return false;

  }




  if ($(elem).attr('checked')) {


    $(part).find('.disabler').addClass('enabled');

    $(part).addClass('selected');


    if (num==1) {    // Workshop


      if ($("#workshop_student").attr('checked')) {
	  

        $("#workshop_student_discount").addClass('selected');

        $("#workshop_block").parents("div[@class^='part']").addClass('discounted');

      }

    }

    if (num==2 || num==1003 || num==1007) {    //  Yes I am a student

	  $("#congress_student").attr('checked', true);
	  $("#workshop_student").attr('checked', true);
	  $("#lectures_student").attr('checked', true);

	  if ($("#congress_block").attr('checked')) {
		  $("#congress_student_discount").addClass('selected');
		  $("#congress_block").parents("div[@class^='part']").addClass('discounted');
	  }
	  
	  if ($("#workshop_block").attr('checked')) {
		$("#workshop_student_discount").addClass('selected');
		$("#workshop_block").parents("div[@class^='part']").addClass('discounted');
	  }
	  
	   if ($("#lectures_block").attr('checked')) {
		$("#lectures_student_discount").addClass('selected');
		$("#lectures_block").parents("div[@class^='part']").addClass('discounted');
	  }
	  
      var bs = $("#workshop_student_school_backup").val();

      if (bs!='') {
		$("#workshop_student_school").val(bs);
		$("#congress_student_school").val(bs);
		$("#lectures_student_school").val(bs);
		}
		   
    }



    if (num==11) {   // Main Congress

     if ($("#congress_student").attr('checked')) {
        $("#congress_student_discount").addClass('selected');
        $("#congress_block").parents("div[@class^='part']").addClass('discounted');
		}

      $("#lectures_block").attr('checked','').attr('disabled','true').removeClass('selected');
      $("#lectures_block").parents("div[@class^='part']").find('label').addClass('disabled');
      $("#firstmay_discount").addClass('selected');

    }

   

    if (num==12) {   // Lectures

    if ($("#lectures_student").attr('checked')) {
        $("#lectures_student_discount").addClass('selected');
        $("#lectures_block").parents("div[@class^='part']").addClass('discounted');
      }

      $("#congress_block").attr('checked','').attr('disabled','true').removeClass('selected');
      $("#congress_block").parents("div[@class^='part']").find('label').addClass('disabled');

    }





  } else {

    $(part).find('.disabler').removeClass('enabled');
    $(part).removeClass('selected');

    if (num==1) {    // Workshop
      $("#workshop_student_discount").removeClass('selected');
    }

  

    if (num==2 || num==1003 || num==1007) {    //  Yes I am a student

      $("#congress_student").attr('checked', false);
	  $("#workshop_student").attr('checked', false);
	  $("#lectures_student").attr('checked', false);

	  if ($("#congress_block").attr('checked')) {
		$("#congress_student_discount").removeClass('selected');
		$("#congress_block").parents("div[@class^='part']").removeClass('discounted');
		$("#workshop_student_school_backup").val($("#congress_student_school").val());
		
	  }
	  
	  if ($("#workshop_block").attr('checked')) {
		  $("#workshop_student_discount").removeClass('selected');
		  $("#workshop_block").parents("div[@class^='part']").removeClass('discounted');
		  $("#workshop_student_school_backup").val($("#workshop_student_school").val());
		  
	  }
	  
	  if ($("#lectures_block").attr('checked')) {
		  $("#lectures_student_discount").removeClass('selected');
		  $("#lectures_block").parents("div[@class^='part']").removeClass('discounted');
		  $("#workshop_student_school_backup").val($("#lectures_student_school").val());
		  
	  }
		$("#congress_student_school").val('');
		$("#workshop_student_school").val('');
		$("#lectures_student_school").val('');
    }


    



    if (num==11) {   // Main Congress
      $("#congress_student_discount").removeClass('selected');
      $("#lectures_block").attr('disabled','');
      $("#lectures_block").parents("div[@class^='part']").find('label').removeClass('disabled');
      $("#firstmay_discount").removeClass('selected');
    }

    if (num==3) {    //  focus at name of school
      $("#workshop_student").attr('checked','true');
	  $("#congress_student").attr('checked','true');
	  $("#lectures_student").attr('checked','true');
      $("#workshop_student_discount").addClass('selected');
      $("#workshop_block").parents("div[@class^='part']").addClass('discounted');    
    }
	
	 if (num==1004) {    //  focus at name of school
	  $("#workshop_student").attr('checked','true');
	  $("#congress_student").attr('checked','true');
	  $("#lectures_student").attr('checked','true');
      $("#congress_student_discount").addClass('selected');
      $("#congress_block").parents("div[@class^='part']").addClass('discounted');
    }
	
	 if (num==1008) {    //  focus at name of school
      $("#workshop_student").attr('checked','true');
	  $("#congress_student").attr('checked','true');
	  $("#lectures_student").attr('checked','true');
      $("#lectures_student_discount").addClass('selected');
      $("#lectures_block").parents("div[@class^='part']").addClass('discounted');
    }
	

	if (num==1005) {    //  change name school in workshop
	  $("#congress_student_school").val($("#workshop_student_school").val());
	  $("#lectures_student_school").val($("#workshop_student_school").val());
	}
	
	if (num==1006) {    //  change name school in congress
	 $("#workshop_student_school").val($("#congress_student_school").val());
	 $("#lectures_student_school").val($("#congress_student_school").val());
	}
	
	
	if (num==1009) {    //  change name school in lectures
	 $("#workshop_student_school").val($("#lectures_student_school").val());
	 $("#congress_student_school").val($("#lectures_student_school").val());
	}
	
	
	
    if (num==12) {   // Lectures
     $("#lectures_student_discount").removeClass('selected');
     $("#congress_block").attr('disabled','');
     $("#congress_block").parents("div[@class^='part']").find('label').removeClass('disabled');
    }



  }

  calc_total();

  check_participation();



  return true;

}



function submit(form) {

  if (check_required(form)) $('form', form).submit();

  return false;

}





function check_required(form) {

  var f = $(form).find('.required');

  var t = true;

  var div, input;

  var empty = false;

  var offset;

  var top = -1;

  var top_input;

  var s;



  if ($(f).size()==0) return true;



  for(var i=0; i<$(f).size(); i++) {

    div = $(f).get(i);  

    input = $(div).find("input[@type='text'],textarea");



    empty = ($(input).val()=='');



    // for participation form non-ordinary condition

    if ($(input).attr('id')=='workshop_student_school') {

      if (!$("#workshop_block").attr('checked')) empty = false;

      if (!$("#workshop_student").attr('checked')) empty = false;

    }
	
	if ($(input).attr('id')=='congress_student_school') {

      if (!$("#congress_block").attr('checked')) empty = false;

      if (!$("#congress_student").attr('checked')) empty = false;

    }

	
	if ($(input).attr('id')=='lectures_student_school') {

      if (!$("#lectures_block").attr('checked')) empty = false;

      if (!$("#lectures_student").attr('checked')) empty = false;

    }

    // some rules for phone and e-mail and fax and post code

    if ($(input).attr('name')=='post_code') {

      s = $(input).val();

      if (s.search(/[^0-9]/)>-1) empty = true;

    }

    if ($(input).attr('name')=='phone' || $(input).attr('name')=='fax') {

      s = $(input).val();

      if (s.search(/[^0-9\+\-\.\,\(\)\s]/)>-1) empty = true;

    }

    if ($(input).attr('name')=='email') {

      s = $(input).val();

      if (s.search(/^[a-z0-9._-]+@[a-z0-9.-]+\.[a-z]{2,6}$/i)<0) empty = true;

    }

    if ($(input).attr('name')=='fax') {

      s = $(input).val();

      if (s=='') empty = false;

    }



    if (empty) {

      t = false;

      $(div).addClass('notfilled');        



      offset = $(div).offset({ padding: true });

      if (top<0 || top>offset.top) {

        top = offset.top;

        top_input = input;

      }



    } else {

      $(div).removeClass('notfilled');

    }

  }



  if (t) return true;



  $('body').animate( { scrollTop: top-50}, 500, function() { $(top_input).focus(); } );

  



  return false;

}





function set_number(elem) {



  $(elem).val( (isNaN($(elem).val())) ? 1 : parseInt($(elem).val()) );



  var div = $("#party_block").parents("div[@class^='part']");    

  $(div).find('.price').text('DKK '+parseNum(parseFloat($(div).find('.pricevalue').text())*parseInt($(elem).val())));



  calc_total();

  check_participation();

}


function get_discount(elem) {

  var div = $(elem).parents('.memberof').get(0);

   $(div).prepend('<div class=\'info loading\'/>');

  $.ajax({  type: 'GET'

         ,  url:  'memberdiscount.html'

         

         ,  dataType: 'html'

         ,  success: function(result, status) {


               $('div.loading',div).remove();

               $(div).prepend('<div class=\'info\'/>');

               $('div.info', div).html('<div class=\'wrappermemberof\'>'+result+'<a href=\'#\' onclick="$(this).parents(\'div.info\').remove(); return false;">close</a></div>');

            }

         });
		 


     return false;

}


function get_info(elem, id) {

  var div = $(elem).parents('.part4').get(0);

  $(div).prepend('<div class=\'info loading\'/>');



  $.ajax({  type: 'GET'

         ,  url:  'ajax_info.php'

         ,  data: {id: id}

         ,  dataType: 'html'

         ,  success: function(result, status) {

         

               $('div.loading',div).remove();



               $(div).prepend('<div class=\'info\'/>');

               $('div.info', div).html('<div class=\'wrapper\'>'+result+'<a href=\'#\' onclick="$(this).parents(\'div.info\').remove(); return false;">close</a></div>');

            }

         });

   return false;

}