function showhidefield(chkbox, URL, comment)
{
	if (chkbox == 'file_chkbox')
		if (document.post.file.checked)
		{
			document.getElementById(URL).style.display = "inline";
			document.getElementById(comment).style.display = "inline";
		}
		else
		{
			document.getElementById(URL).style.display = "none";
			document.getElementById(comment).style.display = "none";
		}
	else if (chkbox == 'video_chkbox')
		if (document.post.video.checked)
		{
			document.getElementById(URL).style.display = "inline";
			document.getElementById(comment).style.display = "inline";
		}
		else
		{
			document.getElementById(URL).style.display = "none";
			document.getElementById(comment).style.display = "none";
		}
	else if (chkbox == 'photo_chkbox')
		if (document.post.photo.checked)
		{
			document.getElementById(URL).style.display = "inline";
			document.getElementById(comment).style.display = "inline";
		}
		else
		{
			document.getElementById(URL).style.display = "none";
			document.getElementById(comment).style.display = "none";
		}
	else if (chkbox == 'link_chkbox')
		if (document.post.link.checked)
		{
			document.getElementById(URL).style.display = "inline";
			document.getElementById(comment).style.display = "inline";
		}
		else
		{
			document.getElementById(URL).style.display = "none";
			document.getElementById(comment).style.display = "none";
		}
	if (document.post.video.checked || document.post.link.checked || document.post.photo.checked || document.post.file.checked)
	{
		document.getElementById('header_URL').style.display = "block";
		document.getElementById('header_comment').style.display = "block";
	}
	else
	{
		document.getElementById('header_URL').style.display = "none";
		document.getElementById('header_comment').style.display = "none";
	}
}

function ShowHideForm (name) 
{
	var f = document.getElementById(name);
	if (f.style.display=="inline" ) 
	{
		f.style.display="none";
	}
	else 
	{
		f.style.display="inline";
	}
}