/******** signature collapse toggle ***********/
			$(window).on('load', function() {
			window.setTimeout(function() {
			var maxHeight = 100;

			/*** check if expandable ***/
			var eles = [];

			$('.message-signature').each(function() {
			var height = $(this).height();
			if (height > maxHeight) {
			eles.push($(this));
			}
			});

			for (var i = 0; i < eles.length; i++) {
											eles[i].addClass('message-signature--expandable');
											};

											/**** expand function ***/
											var expand = function(container, canClose) {
											var inner = container.find('.bbWrapper');
											var eleHeight = inner.height();
											var isExpanded = container.hasClass('message-signature--expanded');

											if (isExpanded) {
											if (canClose) {
											container.css({ height: eleHeight });
											container.removeClass('message-signature--expanded');
											window.setTimeout(function() {
											container.css({ height: maxHeight });
											window.setTimeout(function() {
											container.css({ height: '' });
											}, 200);
											}, 17);					
											}

											} else {
											container.css({ height: eleHeight });
											window.setTimeout(function() {
											container.addClass('message-signature--expanded');
											container.css({ height: '' });
											}, 200);
											}
											}

											/*** handle hover ***/
											

		/*** handle click ***/
		$('.uix_signatureExpand').click(function() {
		var container =  $(this).parent('.message-signature');
		expand(container, true);
		});
		}, 0);
		});