[Javascript] RegExp Multiple

[Anthor]

Code PHP :

<?php 

function BBCode()

{

    var text = document.getElementById('txt').value;



    search = new Array(

          /[img](.*?)=1[/img]/ig,

          /\[email\](([a-z0-9&\-_.]+?)@([\w\-]+\.([\w\-\.]+\.)?[\w]+))\[\/email\]/ig,

          /\[b\](.*?)\[\/b\]/ig,

          /\[url\](http:\/\/[^ \\"nrt<]*?)[/url]/ig);



    replace = new Array(

          "<img src=\"$1\" alt=\"An image\">",

          "<a href=\"mailto:$1\">$1</a>",

          "<b>$1</b>",

          "<a href=\"$1\" target=\"blank\">$1</a>");



    for(i = 0; i < search.length; i++) {

         text = text.replace(search[i],replace[i]);

    };



    alert(text);



    return;    

}