function GetObj(ID){return document.getElementById(ID)}
function hide(this_id){
	if (document.getElementById){
		GetObj(this_id).style.visibility='hidden';
		GetObj(this_id).style.display = 'none';
	}	else {
		document.layers[this_id].visibility='hide';
		document.layers[this_id].style.display = 'none';
	}
}
function show(this_id){
	if (document.getElementById)	{
		GetObj(this_id).style.visibility='visible';
		GetObj(this_id).style.display = 'block';
	}	else {
		document.layers[this_id].visibility='show';
		document.layers[this_id].style.display = 'block';
	}
}