var lyr1 = new getObj("after");
lyr1.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];
  }
}

function clickClick(val){

	var pageUrl = ''+window.location.href;
	var pageUrlPart = pageUrl.split('?');
	var lyr1 = new getObj('before');
	var lyr2 = new getObj('after');
	var value = null;
	
	if (val == 1)
		value = 'Tak';
	else
		value = 'Nie';
	
	pageTracker._trackEvent('Ankieta - czy informacja była przydatna', value, pageUrlPart[0]);
	
	lyr1.style.display = 'none';
	lyr2.style.visibility = 'visible';

}