rem: this.set(this.select(function(className) { return className != classNameToRemove; }).join(' ')); 
add: fragments.each((function(fragment) { this.element.parentNode.insertBefore(fragment, this.element.nextSibling); }).bind(this)); 
context:     this.set(this.select(function(className) {      return className != classNameToRemove;    }).join(' '));
meta: 2320	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2320/19200c26046dc00f15305e03b7c1d28b4c38c952/prototype.js/clean/web/scripts/prototype.js