lastselected = '';
laststyle= '';

function changeimg(newstyle,obj,oldstyle)
{
	if(lastselected != '')
	{
		eval('document.all.item("'+lastselected+'").className = "'+laststyle+'"');
	}
	obj.className = newstyle;
	laststyle = oldstyle;
	lastselected = obj.id;
}

function changeimgout(obj,oldstyle)
{
	if(obj.id!=lastselected)
	obj.className = oldstyle;
}