rem: this.prev_onchange(); 
add: this.prev_onchange(); 
context:   registerCallback: function(element) {    if (element.type) {      switch (element.type.toLowerCase()) {        case 'checkbox':          case 'radio':          element.target = this;          element.prev_onclick = element.onclick || Prototype.emptyFunction;          element.onclick = function() {            this.prev_onclick();             this.target.onElementEvent();          }          break;        case 'password':        case 'text':        case 'textarea':        case 'select-one':        case 'select-multiple':          element.target = this;          element.prev_onchange = element.onchange || Prototype.emptyFunction;          element.onchange = function() {            this.prev_onchange();             this.target.onElementEvent();          }          break;      }    }      }
meta: 863	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/863/3f913f897829fb026ef98df2d57f8da94ee5339d/prototype.js/buggy/public/javascripts/prototype.js