rem: this.element.parentNode.insertBefore(fragment, this.element.nextSibling); 
add: this.element.appendChild(fragment); 
context:     fragments.each((function(fragment) {      this.element.parentNode.insertBefore(fragment,        this.element.nextSibling);    }).bind(this));
meta: 167	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/167/bb2276098a5a21c35e5ee72b3097bd9d7caa919f/prototype.js/clean/railties/html/javascripts/prototype.js