function popup(id, action)
{
	if(action=="close") document.getElementById(id).style.display = "none";
	else
	{
		if(document.getElementById(id).style.display =="none") document.getElementById(id).style.display = "block";
		else if(document.getElementById(id).style.display =="block") document.getElementById(id).style.display = "none";
	}
	
	if (self.pageYOffset)
	{
		sh = self.pageYOffset;
	}
	else if (document.documentElement && document.documentElement.scrollTop)
	{
		sh = document.documentElement.scrollTop;
	}
	if(self.pageYOffset == 0 || document.documentElement.scrollTop == 0)
	{
		shy = 40;
	}
	else shy = sh+40;
	
	if(self.pageYOffset)
	{
		document.getElementById(id).style.top = shy+"px";
	}
	else
	{
		document.getElementById(id).style.bottom = "40px";
	}
}