var position = 0;

function startPolling(){
	setInterval("poll()",1);
}

function poll(){

	var position = document.documentElement.scrollTop; 
	var topLocation = 0;

	if (position>185) {
		document.getElementById("sidebarWrap").style.top=(position-180)+"px";
	} else {
		document.getElementById("sidebarWrap").style.top=topLocation+"px";
	}
	return true;
}