Big white spaces have appeared

Support
#1

Hi

All of a sudden, big white spaces have appeared on certain pages on my website (product pages). Why would this be?

http://envirofwa.com/ambion-range/

#2

Hi There,

Please find this custom JS:

      (function($){
	$(window).on('load resize', function(){
		var max = 0;
		$("#x-section-2 .x-column").css('height', 'auto');
		$("#x-section-2 .x-column").each(function(index, el) {
			if( $(this).outerHeight() > max ){
				max = $(this).outerHeight();
			}
		});
		$("#x-section-2 .x-column").css('height', max);
	});
})(jQuery);

And change to this:

      (function($){
	$(window).on('load resize', function(){
		var max = 0;
		$(".page-id-123 #x-section-2 .x-column").css('height', 'auto');
		$(".page-id-123 #x-section-2 .x-column").each(function(index, el) {
			if( $(this).outerHeight() > max ){
				max = $(this).outerHeight();
			}
		});
		$(".page-id-123 #x-section-2 .x-column").css('height', max);
	});
})(jQuery);

The 123 number is the page ID that contains the equal columns.

Regards!