rem: this.submit_problem.disabled = true; this.submit_map.value = 2; 
add: if (this.submit_problem) { this.submit_problem.disabled = true; this.submit_map.value = 2; } 
context: YAHOO.util.Event.onContentReady('mapForm', function() {    this.onsubmit = function() {        this.submit_problem.disabled = true;        this.submit_map.value = 2;        this.x.value = x + 2;        this.y.value = y + 2;        return true;    }});
meta: 11014	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/11014/83ffacea2e30190d600c88f276e1173df63410c6/js.js/buggy/web/js.js