add:  if (quotecheck.checked && !quotecheck.disabled && document.getElementById("identity.attachSignature").checked && (document.getElementById("identity.replyOnTop").value == 1)) { placebox.firstChild.removeAttribute("disabled"); placebox.lastChild.removeAttribute("disabled"); } else { placebox.firstChild.setAttribute("disabled", "true"); placebox.lastChild.setAttribute("disabled", "true"); } 
context: function quoteEnabling(){  var quotebox = document.getElementById("thenBox");  var quotecheck = document.getElementById("identity.autoQuote");  if (quotecheck.checked && !quotecheck.disabled) {    quotebox.firstChild.removeAttribute("disabled");    quotebox.lastChild.removeAttribute("disabled");  }  else {    quotebox.firstChild.setAttribute("disabled", "true");    quotebox.lastChild.setAttribute("disabled", "true");  }}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/39af5034bb8c3cd5485ef77e10dbeeea0b47b931/am-addressing.js/buggy/mailnews/base/prefs/resources/content/am-addressing.js