function field_info(id)
{
	if(document.getElementById(id).style.display == "")
	{
		document.getElementById(id).style.display = "block";
	}
	
	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";
	}
}