function setTop(){
	if (screen.height<=768)
	{
		document.getElementById('bglayer').style.top='-12px';
	}
	
}

if (window.onload)
	window.onload =	setTop;	
else if (window.attachEvent)
	window.attachEvent("onload", setTop);
else if (window.addEventListener)
	window.addEventListener("load", setTop, true);