var acttab = '1';
$(document).ready(function() {
      // start slide show
	$('#prodsection2').hide();
	$('#prodsection3').hide();
	$('#prodsection4').hide();
});

function showTab(num){
	if(acttab != num){
		$('#spec-tab-' + num).addClass('active');
		$('#spec-tab-' + acttab).removeClass('active');
		$('#prodsection' + acttab).slideUp('fast', function(){
				$('#prodsection' + num).slideDown('slow');
			});
		acttab = num;
	}
	return false;
	}