function strip_tags (str, allowed_tags)
{
var key = '', allowed = false;
var matches = []; var allowed_array = [];
var allowed_tag = '';
var i = 0;
var k = '';
var html = '';
var replacer = function (search, replace, str) {
return str.split(search).join(replace);
};
// Build allowes tags associative array
if (allowed_tags) {
allowed_array = allowed_tags.match(/([a-zA-Z0-9]+)/gi);
}
str += '';
// Match tags
matches = str.match(/(<\/?[\S][^>]*>)/gi);
// Go through all HTML tags
for (key in matches) {
if (isNaN(key)) {
// IE7 Hack
continue;
}
// Save HTML tag
html = matches[key].toString();
// Is tag not in allowed list? Remove from str!
allowed = false;
// Go through all allowed tags
for (k in allowed_array) { // Init
allowed_tag = allowed_array[k];
i = -1;
if (i != 0) { i = html.toLowerCase().indexOf('<'+allowed_tag+'>');}
if (i != 0) { i = html.toLowerCase().indexOf('<'+allowed_tag+' ');}
if (i != 0) { i = html.toLowerCase().indexOf('