getObj = function(o)
{
	//w3c
	if(document.getElementById)
	{
		return document.getElementById(o);
	}

	//ie4+
	else if(document.all)
	{
		return document.all[o];
	}

	//ns4+ without using nested layers
	else if(document.layers)
	{
		return document.layers[o];
	}

	else
	{
		return null;
	}
}