(function($) {

	$(function() {
		$.yuga.css3class();
	});

	//---------------------------------------------------------------------

	$.yuga = {
		// URIを解析したオブジェクトを返すfunction
		Uri: function(path){
			this.originalPath = path;
			//絶対パスを取得
			this.absolutePath = (function(){
				var e = document.createElement('span');
				e.innerHTML = '<a href="' + path + '" />';
				return e.firstChild.href;
			})();
			//絶対パスを分解
			var fields = {'schema' : 2, 'username' : 5, 'password' : 6, 'host' : 7, 'path' : 9, 'query' : 10, 'fragment' : 11};
			var r = /^((\w+):)?(\/\/)?((\w+):?(\w+)?@)?([^\/\?:]+):?(\d+)?(\/?[^\?#]+)?\??([^#]+)?#?(\w*)/.exec(this.absolutePath);
			for (var field in fields) {
				this[field] = r[fields[field]]; 
			}
		},
		//css3のクラスを追加
		css3class: function() {
			//:first-child, :last-childをクラスとして追加
			$('body :first-child').addClass('firstChild');
			$('body :last-child').addClass('lastChild');
			//css3の:emptyをクラスとして追加
			//$('body :empty').addClass('empty');
		}
	};
})(jQuery);

jQuery.fn.toggleVal = function(focusClass) {
	this.each(function() {
		$(this).focus(function() {
			// clear value if current value is the default
			if($(this).val() == this.defaultValue) { $(this).val(""); }
			
			// if focusClass is set, add the class
			if(focusClass) { $(this).addClass(focusClass); }
		}).blur(function() {
			// restore to the default value if current value is empty
			if($(this).val() == "") { $(this).val(this.defaultValue); }
			
			// if focusClass is set, remove class
			if(focusClass) { $(this).removeClass(focusClass); }
		});
	});
}

$(document).ready(function() {
	$(".searchBox, textarea").toggleVal();
});