rem: window.frames[0].scrollTo(0, window.frames[0].document.height); 
add: if (!frame || !("contentWindow" in frame)) return;  var w = frame.contentWindow;  if (force || checkScroll(frame)) w.scrollTo(0, w.document.height); 
context: function scrollDown (){    window.frames[0].scrollTo(0, window.frames[0].document.height);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/48382cacdb61b942a36cd94d23ee819aa41dbcc2/static.js/buggy/extensions/irc/xul/content/static.js