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 = 'images/fir_script.gif?'+suffix;
	test.onload = imageReplacement;
}

function imageReplacement()
{
	replaceThem(document.getElementsByTagName('h1'));
	replaceThem(document.getElementsByTagName('h2'));

}

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 = 'images/headings/' + x[i].id + '.gif';
			y.alt = x[i].firstChild.nodeValue;
			x[i].replaceChild(y,x[i].firstChild);
		}
	}
}

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

}

addLoadEvent(init);