var DHTML = (document.getElementById || document.all || document.layers);
function gobj(name)
{
	if (document.getElementById) {return document.getElementById(name).style;}
	else if (document.all) {return document.all[name].style;}
	else if (document.layers) {return document.layers[name];}
}
function showporteghaling(name,status)
{
	if (!DHTML) return;
	var x = gobj(name);
	x.visibility = (status) ? 'visible':'hidden'
	if(! document.getElementById)
	if(document.layers)
	x.left=280/2;
	return true;
}