Someone

// Onload Observer
window.onloadListeners = new Array();
window.addOnloadListener(listener)
{
	window.onloadListeners[window.onloadListeners.length] = listener;
}

// Listeners
window.addOnloadListener(adjustLayout);
window.addOnloadListener(externalLinks);

// Onload
window.onload = function()
{
	for (var i = 0; i < window.onloadListeners.length; i++)
	{
		var func = window.onloadListeners[i];
		func.call();
	}
}