rem: this.set(this.select(function(className) { return className != classNameToRemove; }).join(' ')); 
add: this.element.className.split(/\s+/).select(function(name) { return name.length > 0; })._each(iterator); 
context:     this.set(this.select(function(className) {      return className != classNameToRemove;    }).join(' '));
meta: 4707	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4707/50c3492c4c3c825dbd3401e134a19ed46799c456/prototype.js/clean/www/resources/prototype/prototype.js