rem: numMessages = messageList.length; 
add: var numMessages = messageList.length; 
context: function PrintEnginePrint(){    var messageList = GetSelectedMessages();    numMessages = messageList.length;    if (numMessages == 0) {        dump("PrintEnginePrint(): No messages selected.\n");        return false;    }    printEngineWindow = window.openDialog("chrome://messenger/content/msgPrintEngine.xul",                                                        "",                                                        "chrome,dialog=no,all",                                                        numMessages, messageList, statusFeedback);    return true;}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/39f4c3e2e14884a03443c59750e427230e3fc0db/mailWindowOverlay.js/clean/mailnews/base/resources/content/mailWindowOverlay.js