// images are loaded asynchronously with no delay

function preloading(i, url)
{
	var xhr=createXHR();   
	xhr.onreadystatechange=function()
	{ 
		if(xhr.readyState == 4)
		{
			i.src = url;
		} 
	}; 

	xhr.open("GET", url , true);
	xhr.send(null); 
} 

/*
function loadAll()
{
	preloading(new Image(), "images/acores.jpg");
	preloading(new Image(), "images/prison.jpg");
	preloading(new Image(), "images/shark.jpg");
}*/