window.onload=hideLayer;
function showLayer(){
	var ua;
	ua=navigator.userAgent;
	if(ua.indexOf("MSIE", 0)>=0){
	document.getElementById("instLayer").style.display="block";
	}
}

function hideLayer(){
	document.getElementById("instLayer").style.display="none";
}
/*function showLayerTop(){
	document.createStyleSheet('top_rec.css');
	showLayer();
}

function hideLayerTop(){
	document.createStyleSheet('top_rec.css');
	showLayer();
}
function dummy(){}*/