add: if (document.frm_help.check==undefined) { return; } 
context: function updateList() {  // write back to opener window  var list = new Array();  for (box=0; box < document.frm_help.check.length; box++) {      if (document.frm_help.check[box].checked) {          list.push(document.frm_help.check[box].value);      }  }  window.opener.document.itemSynopsis[field].value = list.join(",");}
meta: 7632	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/7632/6f39a8ca9844a8032fddbcb96a87f5de43991f6f/help_controls.js/clean/templates/classic/html/help_controls.js