function showNextSlide() {
var $activeslide = $('#support .slide.active');
var $nextslide = $activeslide.next();
if ($nextslide.length == 0) {
$nextslide = $('#support .slide').first();
}
var tab =$nextslide.data('id');
$(this'#support nav a').addClass('active').siblings().removeClass('active');
$activeslide.removeClass('active');
$nextslide.addClass('active');
}