function disp_object(but_list, but, view_list, view)
{
	var tmp_b = document.getElementById(but);
		if (tmp_b == null) { alert('Unknwon button ['+but+']!'); return; }
	var tmp_v = document.getElementById(view);
		if (tmp_v == null) { alert('Unknwon view ['+view+']!'); return; }
	
	var ikey='';
	var buts = but_list;
	var divs = view_list;
	
	for(ikey in buts)
	{
		tmp_b = document.getElementById(buts[ikey]);
		if (tmp_b.className == null) { alert('Unknwon object ['+buts[ikey]+']!'); return; }
		tmp_b.className = 'item';
	}
	
	for(ikey in divs)
	{
		tmp_v = document.getElementById(divs[ikey]);
		if (tmp_v.className == null) { alert('Unknwon view ['+divs[ikey]+']!'); return; }
		tmp_v.style.display = 'none';
	}
	
	document.getElementById(but).className = 'item_selected';
	document.getElementById(view).style.display = 'inline';
}