slideDown: function(speed,callback){
		return this.animate({height: "show"}, speed, callback);
	},

	slideUp: function(speed,callback){
		return this.animate({height: "hide"}, speed, callback);
	},

	slideToggle: function(speed, callback){
		return this.animate({height: "toggle"}, speed, callback);
	},

	fadeIn: function(speed, callback){
		return this.animate({opacity: "show"}, speed, callback);
	},

	fadeOut: function(speed, callback){
		return this.animate({opacity: "hide"}, speed, callback);
	},