function init()
{
var W3CDOM = (document.createElement && document.getElementsByTagName);
if (!W3CDOM) return;
var test = new Image();
var tmp = new Date();
var suffix = tmp.getTime();
test.src = 'img/logo495x150.gif?'+suffix;
test.onload = imageReplacement;
}

function imageReplacement()
{
replaceThem(document.getElementsByTagName('h1'));
}

function replaceThem(x)
{
var replace = document.createElement('img');
for (var i=0;i<x.length;i++)
{
	if (x[i].id)
	{
		var y = replace.cloneNode(true);
		y.src = 'img/' + x[i].id + '.gif';
		y.alt = x[i].firstChild.nodeValue;
		x[i].replaceChild(y,x[i].firstChild);
	}
}
}