rem: this.element.className.split(/\s+/).select(function(name) { return name.length > 0; })._each(iterator); 
add: this.set(this.select(function(className) { return className != classNameToRemove; }).join(' ')); 
context:     this.element.className.split(/\s+/).select(function(name) {      return name.length > 0;    })._each(iterator);
meta: 2385	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2385/55c6c64da0fbbfba74a0b4ad68022bf640a0a049/prototype.js/buggy/actionpack/lib/action_view/helpers/javascripts/prototype.js