Gravity form post AJAX submission jquery call

main.js

    jQuery(document).bind('gform_post_render', function(){
        
        // code to trigger on AJAX form render
        $('select').fancySelect();
		formResize();
		$(window).on('resize', formResize);	
		$(window).on('load',formResize);
		$('select').on('change', formResize);
		$('.fancy-select .options li').on('click', formResize);

		/********************************
		 	  * Custom check box *
		********************************/
        $.each($('input[type="checkbox"]'), function() {
			var name = $(this).attr('id') || $(this).attr('name');
			$(this).after('<span class="custom-checkbox" for="'+ name +'"></span>');
		});

		/********************************
		 	* Custom scroll textarea *
		********************************/
		$("textarea").niceScroll({
			autohidemode: false,
			cursorcolor: "#e5e6e7",
			cursorwidth: "6px",
			railoffset: "5px"
		});		

		/**************************************
		 * VALIDATION ERROR CUSTOM POSITION *
		**************************************/	 
		var errorHtml = jQuery('.validation_error').html();
		if(jQuery('#contact-form .gform_wrapper').hasClass('gform_validation_error')){
			jQuery('#contact-form .validation_error').remove();
			
			jQuery('#contact-form .gform_footer').append('<div class="validation_error"><span>'+errorHtml+'</span></div>');
		}else {
			jQuery('.validation_error').css('display', 'none');
		}

    });