var xV1 = 5;

function stayHome(){	
	nV = document.body.scrollTop;	
	document.getElementById('isFloat1').style.top = xV1+nV;
}
function init(){
	xV1 = document.getElementById('isFloat1').offsetTop;
}

window.onload=init;
window.onscroll=stayHome;

function LeftAd() {
	if (screen.width < 1024 && screen.height < 768) {
		document.getElementById('isFloat1').style.display = "block"
		document.getElementById('wrapper').style.width = "auto";
		document.getElementById('content').style.cssFloat = "none";
	}
	if (screen.width >= 1024 && screen.height >= 768) {
		document.getElementById('wrapper').style.width = "980px";
		document.getElementById('content').style.cssFloat = "right";
		document.getElementById('isFloat1').style.display = "block";
	}
}