$(this).scroll(function() { 
var bodyTop = 0; 
if (typeof window.pageYOffset != 'undefined') { 
bodyTop = window.pageYOffset; 
} 
else if (typeof document.compatMode != 'undefined' && document.compatMode != 'BackCompat') 
{ 
bodyTop = document.documentElement.scrollTop; 
} 
else if (typeof document.body != 'undefined') { 
bodyTop = document.body.scrollTop; 
} 
$("#floatqq").css("top", 230 + bodyTop);
});