rem: this.prev_onclick(); 
add: this.prev_onclick(); 
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: 1782	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1782/3f0bcc29b1d13b6ec87c6b75980c7f271e175e80/prototype.js/buggy/webapp/sandbox/scripts/prototype.js