function block_on(x)
{
  if (x==1)
  {
    document.getElementById('bl_1').style.display = 'block';
    document.getElementById('bl_2').style.display = 'none';
    document.getElementById('bl_3').style.display = 'none';
	document.getElementById('bl_5').style.display = 'none';
  }
  if (x==2)
  {
    document.getElementById('bl_1').style.display = 'none';
    document.getElementById('bl_2').style.display = 'block';
    document.getElementById('bl_3').style.display = 'none';
	document.getElementById('bl_5').style.display = 'none';
  }
  if (x==3)
  {
    document.getElementById('bl_1').style.display = 'none';
    document.getElementById('bl_2').style.display = 'none';
    document.getElementById('bl_3').style.display = 'block';
	document.getElementById('bl_5').style.display = 'none';
  }
   if (x==5)
  {
    document.getElementById('bl_5').style.display = 'block';
	document.getElementById('bl_6').style.display = 'none';
  }  

   if (x==6)
  {
    document.getElementById('bl_5').style.display = 'none';
	document.getElementById('bl_6').style.display = 'block';
  }  

}

function block_off(x)
{
  val = 'bl_' + x;
  document.getElementById(val).style.display = 'none';
}

function setCookie (name, value, expires, path, domain, secure) {
      document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}