jQuery.fn.dataTableExt.oSort['ulica-asc']  = function(a,b) {
	var x = a.replace( /<.*?>/g, "" ).toLowerCase();
	var y = b.replace( /<.*?>/g, "" ).toLowerCase();
	return x.localeCompare(y);
};

jQuery.fn.dataTableExt.oSort['ulica-desc'] = function(a,b) {
	var x = a.replace( /<.*?>/g, "" ).toLowerCase();
	var y = b.replace( /<.*?>/g, "" ).toLowerCase();
	return y.localeCompare(x);
};


function fnIzbovost( a )
 {
 	if ( a == "G" )        { return 1; }
 	else if ( a == "2G" ) { return 2; }
 	else if ( a == "2Glux" )    { return 3; }
 	else if ( a == "1" )    { return 4; }
 	else if ( a == "1.5" )    { return 5; }
 	else if ( a == "2" )    { return 6; }
 	else if ( a == "2.5" )    { return 7; }
 	else if ( a == "3" )    { return 8; }
 	else if ( a == "3.5" )    { return 9; }
 	else if ( a == "4" )    { return 10; }
 	else if ( a == "4.5" )    { return 11; }
 	else if ( a == "5" )    { return 12; }
 	else if ( a == "6+" )    { return 13; }

 	return 14;
 };

   jQuery.fn.dataTableExt.oSort['izby-asc']  = function(a,b) {
   	var x = fnIzbovost( a );
   	var y = fnIzbovost( b );

   	return ((x < y) ? -1 : ((x > y) ? 1 : 0));
   };

   jQuery.fn.dataTableExt.oSort['izby-desc'] = function(a,b) {
   	var x = fnIzbovost( a );
   	var y = fnIzbovost( b );

   	return ((x < y) ? 1 : ((x > y) ? -1 : 0));
   };
   
  



jQuery.fn.dataTableExt.oSort['title-numeric-asc']  = function(a,b) {
	var x = a.match(/title="*(-?[0-9\.]+)/)[1];
	var y = b.match(/title="*(-?[0-9\.]+)/)[1];
	x = parseFloat( x );
	y = parseFloat( y );
	return ((x < y) ? -1 : ((x > y) ?  1 : 0));
};

jQuery.fn.dataTableExt.oSort['title-numeric-desc'] = function(a,b) {
	var x = a.match(/title="*(-?[0-9\.]+)/)[1];
	var y = b.match(/title="*(-?[0-9\.]+)/)[1];
	x = parseFloat( x );
	y = parseFloat( y );
	return ((x < y) ?  1 : ((x > y) ? -1 : 0));
};

(function($) {
/*
 * Function: fnGetColumnData
 * Purpose:  Return an array of table values from a particular column.
 * Returns:  array string: 1d data array 
 * Inputs:   object:oSettings - dataTable settings object. This is always the last argument past to the function
 *           int:iColumn - the id of the column to extract the data from
 *           bool:bUnique - optional - if set to false duplicated values are not filtered out
 *           bool:bFiltered - optional - if set to false all the table data is used (not only the filtered)
 *           bool:bIgnoreEmpty - optional - if set to false empty values are not filtered from the result array
 * Author:   Benedikt Forchhammer <b.forchhammer /AT\ mind2.de>
 */
$.fn.dataTableExt.oApi.fnGetColumnData = function ( oSettings, iColumn, bUnique, bFiltered, bIgnoreEmpty ) {
	// check that we have a column id
	if ( typeof iColumn == "undefined" ) return new Array();
	
	// by default we only wany unique data
	if ( typeof bUnique == "undefined" ) bUnique = true;
	
	// by default we do want to only look at filtered data
	if ( typeof bFiltered == "undefined" ) bFiltered = true;
	
	// by default we do not wany to include empty values
	if ( typeof bIgnoreEmpty == "undefined" ) bIgnoreEmpty = true;
	
	// list of rows which we're going to loop through
	var aiRows;
	
	// use only filtered rows
	if (bFiltered == true) aiRows = oSettings.aiDisplay; 
	// use all rows
	else aiRows = oSettings.aiDisplayMaster; // all row numbers

	// set up data array	
	var asResultData = new Array();
	
	for (var i=0,c=aiRows.length; i<c; i++) {
		iRow = aiRows[i];
		var aData = this.fnGetData(iRow);
		var sValue = aData[iColumn];
		
		// ignore empty values?
		if (bIgnoreEmpty == true && sValue.length == 0) continue;

		// ignore unique values?
		else if (bUnique == true && jQuery.inArray(sValue, asResultData) > -1) continue;
		
		// else push the value onto the result data array
		else asResultData.push(sValue);
	}
	
	return asResultData;
}}(jQuery));


function fnCreateSelect( aData )
{
	var r='<select><option value=""></option>', i, iLen=aData.length;
	for ( i=0 ; i<iLen ; i++ )
	{
		aData[i] = aData[i].replace( /<.*?>/g, "" );
		r += '<option value="'+aData[i]+'">'+aData[i]+'</option>';
	}
	return r+'</select>';
}









 $(document).ready(function() {   
 var oTable =	$('#tabulka_byty').dataTable( { 
	
	"aaSorting": [ [ 1, "asc" ], [ 2, "asc"] ], 
"aoColumnDefs": [  
			{ "sType": "ulica", "aTargets": [ 0 ] }, 
			{ "sType": "izby", "aTargets": [ 1 ] }, 
			{ "sType": "title-numeric", "aTargets": [ 7 ] } 
			] ,

"aLengthMenu": [ [10, 25, 50, -1], [10, 25, 50, "Všetky"] ], 

"iDisplayLength": 25, 
"sPaginationType": "full_numbers",

"oLanguage":  	{
		"sProcessing":   "Pracujem...",
		"sLengthMenu":   "Zobraz _MENU_ záznamov",
		"sZeroRecords":  "Neboli nájdené žiadne záznamy",
		"sInfo":         "Záznamy _START_ až _END_ z celkovo _TOTAL_",
		"sInfoEmpty":    "Záznamy 0 až 0 z celkovo 0",
		"sInfoFiltered": "(filtrované z celkovo _MAX_ záznamov)",
		"sInfoPostFix":  "",
		"sSearch":       "Hľadaj:",
		"sUrl":          "",
		"oPaginate": {
			"sFirst":    "<<",
			"sPrevious": "<",
			"sNext":     ">",
			"sLast":     ">>"
		}
	}
   });

		
/* Add a select menu for each TH element in the table footer */
$("#tabulka_byty thead tr").clone().appendTo($("#tabulka_byty thead")).find("th").removeClass('sorting sorting_asc sorting_desc').each(function( i ) {
  //code from multi-filter example

	this.innerHTML = fnCreateSelect( oTable.fnGetColumnData(i) );
	
	
	
		$('select', this).change( function () 
		{	if($(this).val() == "") {
			oTable.fnFilter("", i, false);
			oTable.fnDraw();
		} else {
			oTable.fnFilter( "^" + $(this).val() + "$", i, true );
		}

		});	
		
	
	});
/* koniec – funkcne, ale neda sa zneviditelnit nechcene filtre...treba pridat  */

	

 } );