little update
PHP Code:
$text = preg_replace("/\[scro\]\s*((\s|.)+?)\s*\[\/scro\]\s*/i","<marquee direction=right behavior=alternate loop=\"-1\" scrollamount=\"4\" width=\"100%\">\\1</marquee>", $text);
$text = preg_replace("/\[led\]\s*((\s|.)+?)\s*\[\/led\]\s*/i","<div align=center>
<embed FlashVars=\"bt=\\1 &cl=red\" src=\"http://www.superpimper.com/generators/LED_Scroller/LED_Scroller.swf\" quality=\"high\" wmode=\"transparent\" bgcolor=\"000000\" width=\"380\" height=\"50\" name=\"blipsy-sign\" align=\"middle\" allowScriptAccess=\"sameDomain\" type=\"application/x-shockwave-flash\"><br />
</div>
<img style=\"visibility:hidden;width:0px;height:0px;\" border=0 width=0 height=0 src=\"http://counters.gigya.com/wildfire/IMP/CXNID=2000002.0NXC/bT*xJmx*PTEyMzMzMjE5NDU4NzUmcHQ9MTIzMzMyMTk1NjQ2OCZwPTE5NTAxJmQ9Jmc9MSZ*PSZvPTc3NDA*ODdmODJmNTRkOGVhN2NjZjQ1OWIxMzczZDlj.gif\" />
", $text);