Atkal stringi :) 

replace_text(string text, string find, string replacement) : string
 "Search within \$text and replaces any occurences of \$find with \$replacement."
mageboltrat's industrial nippon

function replace_text(string text, string find, string replacement) : string
 "Search within \$text and replaces any occurences of \$find with \$replacement." {
#######################################################
# from lj:mageboltrat's industrial nippon (id=533012) #
#######################################################
  var string[] findarray;
  var int pos = 1;
  foreach var string findcharacter($find) {
    $findarray[$pos] = $findcharacter;
    $pos             = $pos + 1;
  }
  var int    place         = 1;
  var bool   found         = false;
  var string completedtext = "";
  var string foundtext     = "";
  foreach var string searchcharacter($text) {
    if  ($searchcharacter == $findarray[$place]) {
      if ($place == $find->length()) {
        $foundtext =  $replacement;
        $place     = 1;
      } else {
        $foundtext = $foundtext + $searchcharacter;
        $place     = $place + 1;
      }  
    } else {
      $completedtext = $completedtext + $foundtext + $searchcharacter;
      $foundtext     = "";  
      $place         = 1;    
    }
  }
  $completedtext = $completedtext + $foundtext;
  return $completedtext;
}

example:

var string replaced_text = replace_text(
               $e.text,
               "http://stat.livejournal.com/img/userinfo.gif",
               "http://pics.livejournal.com/img/fb-userinfo.gif"
               );

------------------------------------

rehtml(string text) : string
 "Unescape html in \$text by replacing &gt; with > and &lt; with <."
developed by masterslacker using mageboltrat's replace_text

function rehtml(string text) : string
 "Unescape html in \$text by replacing &gt; with > and &lt; with <." {
####################################################################
# by lj:masterslacker using lj:mageboltrat's replace_text function #
####################################################################
  return replace_text(replace_text($text, "&lt;", "<"), "&gt;", ">");
}

example: if html is entered into the customization wizard it is stored inside the property in its escaped form. this function will unescape it.