function addLoadEvent(func){
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}
}

function showLogo(){
	document.getElementById("headerRel").style.visibility="visible";
}
addLoadEvent(showLogo);