HTML corrector escapes open tags of javascript literals

Following code of counter is handled incorrectly and counter is now displayed on the page after drupal.

Drupal modifies the string

"alt='1Gb.ua counter'><\/a>")

to

"alt='1Gb.ua counter' /><\/a>")

The full code of counter follows:

cgb_js="1.0"; cgb_r=""+Math.random()+"&r="+ escape(document.referrer)+"&pg="+ escape(window.location.href); document.cookie="rqbct=1; path=/"; cgb_r+="&c="+ (document.cookie?"Y":"N"); cgb_js="1.1";cgb_r+="&j="+ (navigator.javaEnabled()?"Y":"N") cgb_js="1.2"; cgb_r+="&wh="+screen.width+ 'x'+screen.height+"&px="+ (((navigator.appName.substring(0,3)=="Mic"))? screen.colorDepth:screen.pixelDepth) cgb_js="1.3"cgb_r+="&js="+cgb_js; document.write(""+ "<\/a>")

border=0 width="88" height="31" alt="1Gb.ua counter">

The reason for this "

This is somewhat because of the code in file filter.module, line 777:

$text = preg_replace('!<([^a-zA-Z/])!', '<\1', $text);

I don't know how this can be fixed in simple way