function Blink()
{
	if(i%2==0)
	{
	  var attrib = on;//'visible';
	}
	else
	{
	  var attrib = off;//'hidden';
	}
	if (document.getElementById) //IE5 lub NN6
	{
		document.getElementById("prem_hint").style.color = attrib;
	}
	else if (document.layers) //NN4
	{
		var attrib = (flag) ? 'hide' : 'show';
	  document.layers["prem_hint"].visibility = attrib;
	}
	if(i<1)
	 {
	 i++;
	 } 
	 else
	 {
	 i--
	 }
	 setTimeout("Blink()",blink_speed);
}