function set_vis(vis, objname)
{
for(var i=1; i<set_vis.arguments.length; i++)
	{
	f = new getObj(set_vis.arguments[i]);
	f.style.visibility = vis;
	}
}
	


function toggle_vis(objname)
{
	var f = new getObj(objname);
	if (f.style.visibility == 'hidden')
		f.style.visibility = 'visible';
	else
		f.style.visibility = 'hidden';
		
}

function getObj(name)
{
  if (document.getElementById)
  {
    this.obj = document.getElementById(name);
	this.style = document.getElementById(name).style;
  }
  else if (document.all)
  {
    this.obj = document.all[name];
	this.style = document.all[name].style;
  }
  else if (document.layers)
  {
   	this.obj = document.layers[name];
   	this.style = document.layers[name];
  }
}