function thumb(URL)
{
	re = new RegExp("^[^\[]+\.(jpg|png|gif|jpeg)", "i");
	
	if (URL.match(re))
	    document.write('<a class="thumb" href="' + URL + '" target="_blank"><img class="thumb" src="' + URL + '" alt="thumb ' + URL + '" height="120" /></a>');
	else
	    document.write(URL);
}

function thumbAlternative(BIG, SMALL)
{
	re = new RegExp("^[^\[]+\.(jpg|png|gif|jpeg)", "i");
	reSmall = new RegExp("^[^\[]+\.(jpg|png|gif|jpeg)", "i");
	
	if( BIG.match(re))
	{
		if( SMALL.match(reSmall) )
		{
			 document.write('<a class="thumb" href="' + BIG + '" target="_blank"><img class="thumb" src="' + SMALL + '" alt="thumb ' + SMALL + '" height="120" /></a>');
		}
		else
		{
			document.write('<a class="thumb" href="' + BIG + '" target="_blank"><img class="thumb" src="' + BIG + '" alt="thumb ' + BIG + '" height="120" /></a>');
		}
	}
	else
	{
		document.write(BIG);
	}
}