rem: add: function(classNameToAdd) { if (this.include(classNameToAdd)) return; this.set(this.toArray().concat(classNameToAdd).join(' ')); }, 
add: },add:function(a,b){ return a+b; },sub:function(a,b){ 
context:   add: function(classNameToAdd) {    if (this.include(classNameToAdd)) return;    this.set(this.toArray().concat(classNameToAdd).join(' '));  },
meta: 1213	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1213/55c6c64da0fbbfba74a0b4ad68022bf640a0a049/prototype.js/buggy/railties/html/javascripts/prototype.js