var jsDOM0 = (document.all);
var jsDOM1 = (document.getElementById);

function getObj(name)
{
	if (typeof name == "object") return name;
	if (jsDOM1) return document.getElementById(name);
	if (jsDOM0) return eval('document.all.'+name);
	else return null;
}

var toggled;

function toggle_visibility(id)
{
  if (typeof toggled == "object")
  {
    toggled.style.display='none';
  }

  toggled=getObj(id);
  toggled.style.display='';

  return true;
}