window.onDomReady = DomReady;

function DomReady(fn)
{
	//W3C
	if(document.addEventListener)
	{
		document.addEventListener("DOMContentLoaded", fn, false);
	}
	//IE
	else
	{
		document.onreadystatechange = function(){readyState(fn)}
	}
}

//IE 
function readyState(fn)
{
	//dom is ready for interaction
	if(document.readyState != "undefined")
	{
		fn();
	}
}

window.onDomReady(onReady);

//do on ready
function onReady()
{
	p =  function $(element){
	return document.getElementById(element);
	} 
p('navigation').style.display="none";
}