if (_architekt_tab == undefined) {
	var _architekt_tab = true;
	$(document).ready(function(){
		$('.tab_H .tab_B')
			.mouseover(function(){$(this).addClass   ('tab_O')})
			.mouseout (function(){$(this).removeClass('tab_O')})
			.click(function(){
				var id_this    = this;
				var id_button  = $(this).attr('rel');
				var id_istance = $(this).parent().attr('rel');
				$('#tab_M_'+id_istance).fadeTo(150, 0.01, function(){
					$('#tab_H_'+id_istance + ' .tab_B').removeClass('tab_A');
					$(id_this).addClass('tab_A');
					$('#tab_M_'+id_istance+' .tab_C').hide();
					$('#tab_C_'+id_istance+'_'+id_button).show();
					$('#tab_M_'+id_istance).fadeTo(150, 1);
				});
			})
		;
	});
}