$.tablesorter.addWidget({
	id: 'colfilter',
	format: function(element){
		var __colfilter = this;
		var table = $(element);
		var table_id = table.attr('id');
		if (table_id==false){ table_id = 'jFTable-'+Math.round(Math.random()*10000); table.attr('id',table_id);}
		if ($('#filters-for-'+table_id).length==0 && $('th[class~="colfilter"]').length>0){
			$('thead tr',table).after('<tr id="filters-for-'+table_id+'"></tr>');
			$('th',table).each(function(n,e){
				$('#filters-for-'+table_id).append('<th id="filter-column-'+table_id+'-'+n+'"></th>');
				if ($(e).attr('class').indexOf('colfilter')!=-1){
					$('#filter-column-'+table_id+'-'+n).append('<select rel="colfilter" id="filter-select-for-'+table_id+'-column-'+n+'"></select>');
					var options = [];
					var optionsAdded = [];
					$('td:nth-child('+(n+1)+')',table).each(function(o,itm){
						var tItm = $(itm).text();
						if ($.inArray(tItm,optionsAdded)<0){
							options[options.length] = '<option value="'+tItm+'">'+tItm+'</option>';
							optionsAdded[optionsAdded.length] = tItm;
						}
					});
					options.sort();
					options.unshift('<option value="">Bce...</option>');
					$('#filter-select-for-'+table_id+'-column-'+n).html(options.join('')).bind('change',function(ev){
						ev.preventDefault();
						__colfilter.colfilterRun(element);
					});
				}
			});
		}
	},
	colfilterRun: function(table){
		$('tbody tr:hidden', table).show();
		$('tbody tr',$(table)).each(function(n,r){
			$('td',$(r)).each(function(i,f){
				$(f).attr('passFilter',true);
				var myFilterColumn = $('#filter-select-for-'+$(table).attr('id')+'-column-'+i);
				if (myFilterColumn.length>0){
					$(f).attr('passFilter',false);
					if ($(f).text().toLowerCase().indexOf(myFilterColumn.val().toLowerCase()) == 0) $(f).attr('passFilter',true);
				}
			});
			if ($('td',$(r)).length==$('td[passFilter="true"]',$(r)).length){
				$(r).show();
			}else{
				$(r).hide();
			}
		});
    	}
});