function enorog_clean_url(s,opt) {
	searchCharacters = ['č','š','ž','ć','đ','Č','Š','Ž','Ć','Đ','ä','ö','ü','Ä','Ö','Ü','_',' '];
	replaceCharacters = ['c','s','z','c','d','C','S','Z','C','D','a','o','u','A','O','U','-','-'];
	s = enorog_str_replace(searchCharacters, replaceCharacters, s);
	s = s.toLowerCase();
	s = s.replace(/[^a-z0-9-]/g, "");
	s = s.replace(/-+/g, "-");
	if (!opt) { // no dashes onkeyup
		s = s.replace(/^-*|-*$/g, "");
	}
	return s;
}

function enorog_str_replace(f,r,s) {
	var ra = r instanceof Array, sa = s instanceof Array, l = (f = [].concat(f)).length, r = [].concat(r), i = (s = [].concat(s)).length;
	while(j = 0, i--)
		while(s[i] = s[i].split(f[j]).join(ra ? r[j] || "" : r[0]), ++j < l);
	return sa ? s : s[0];
}