var _imageid;
var _sets = new Array();

function setimage(imageid)
{
	_imageid = imageid;
}

function addset(id, set)
{
	_sets[id] = set;
}

function replace(newimageurl, newalt)
{
	image = document.getElementById(_imageid);
	image.alt = newalt;
	image.src = newimageurl;
}

function setreplace(setid)
{
	replace(_sets[setid]['url'], _sets[setid]['alt']);
}