utilities.js

	$.fn.setupFilterInput = function(callback) {
		var $input = $(this),
			$searchX = $input.parent().find("#x-icon");

		$input.focus(function(event) {
				if(this.value == $input.prop("placeholder"))
					this.value = "";

			}).blur(function(event) {
				if(!this.value || this.value == "")
					this.value = $input.prop("placeholder");

			}).keyup(function(event) {
				if(this.value.length > 0)
					$searchX.addClass("active");
				else
					$searchX.removeClass("active");

				if(_.isFunction(callback))
					$input.on("keyup", callback);

			}).trigger("blur").end();

		$searchX.click(function(event) {
			event.preventDefault();

			$input.val($input.prop("placeholder"));
			$(this).removeClass("active");
		});

		return this;
	};