function filterExbs(_matchChar){
	
	var key = 0;
	
	if(_matchChar == ''){
		$('.exhibitorsTable tr').show();
	}
	else{
		$(".exhibitorsTable tr").hide();
		$(".exhibitorsTable tr:first").show();
		$(".exhibitorsTable tr.first_char_"+_matchChar).show();
	}
}