add: e = null; 
context:   "INPUT.number" : function(e) {    e.targetElement = findFollowingTR(e,"validation-error-area").firstChild.nextSibling;    e.onchange = function() {      if(this.value.match(/^(\d+|)$/)) {        this.targetElement.innerHTML="";      } else {        this.targetElement.innerHTML="<div class=error>Not a number</div>";      }    }  },
meta: 3881	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/3881/26620e13d5ab0f1ccf047b30c6831372a174f34b/hudson-behavior.js/buggy/war/resources/scripts/hudson-behavior.js