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];
  }
}
/* toggle visibility */
function visElement(objekt) {
  if (document.getElementById(objekt).style.visibility=="visible") {
	document.getElementById(objekt).style.visibility="hidden";
  }
  else {
	document.getElementById(objekt).style.visibility="visible";  
  }
}