var urlOld;

function changeUrl(url)
{
if(!url)
  url = urlOld;
else
  urlOld = url;

if (url) 
{
	if (document.getElementsByName("format")[0].checked)
		inhalt = "[URL=http://www.lachmeister.de][IMG]" +url+ "[/IMG][/URL]";
	else
		inhalt =  "<a href=\"http://www.lachmeister.de\"><img src=\"" +url+ "\" border=\"0\" alt=\"Smilies\"></a>";
} 
else
	inhalt = "Bitte einen Smiley anklicken.";
	document.getElementsByName("smileyinput")[0].value = inhalt;
	document.getElementsByName("smileyinput")[0].focus();
}