/**
 * jQuery-Plugin "clearField"
 *
 * @version: 1.1, 04.12.2010
 *
 * @author: Stijn Van Minnebruggen
 *          stijn@donotfold.be
 *          http://www.donotfold.be
 *
 * @example: $('selector').clearField();
 * @example: $('selector').clearField({ blurClass: 'myBlurredClass', activeClass: 'myActiveClass' });
 *
 */

(function($) {

	$.fn.clearField = function(settings) {

		/**
		 * Settings
		 *
		 */

		settings = jQuery.extend({
			blurClass: 'clearFieldBlurred',
			activeClass: 'clearFieldActive',
			attribute: 'rel',
			value: ''
		}, settings);


		/**
		 * loop each element
		 *
		 */

		return $(this).each(function() {

			/**
			 * Set element
			 *
			 */

			var el = $(this);


			/**
			 * Get starting value
			 *
			 */

			settings.value = el.val();


			/**
			 * Add or get attribute
			 *
			 */

			if(el.attr(settings.attribute) == undefined) {
				el.attr(settings.attribute, el.val()).addClass(settings.blurClass);
			} else {
				settings.value = el.attr(settings.attribute);
			}


			/**
			 * Set focus action
			 *
			 */

			el.focus(function() {

				if(el.val() == el.attr(settings.attribute)) {
					el.val('').removeClass(settings.blurClass).addClass(settings.activeClass);
				}

			});


			/**
			 * Set blur action
			 *
			 */

			el.blur(function() {

				if(el.val() == '') {
					el.val(el.attr(settings.attribute)).removeClass(settings.activeClass).addClass(settings.blurClass);
				}

			});


		});

	};

})(jQuery);