rem: return this.filter(":visible").animate({height: "hide"}, speed, callback).end(); 
add: return this.animate({height: "hide"}, speed, callback); 
context: 	slideUp: function(speed,callback){		return this.filter(":visible").animate({height: "hide"}, speed, callback).end();	},
meta: 5264	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5264/9b5363b9eb197515e31589894c945dfd70b8b93b/fx.js/buggy/src/fx/fx.js