function urlencode(str) {
	var ns = (navigator.appName=="Netscape") ? 1 : 0;
	if (ns) { return escape(str); }
	var ms = "%25#23 20+2B?3F<3C>3E{7B}7D[5B]5D|7C^5E~7E`60";
	var msi = 0;
	var i,c,rs,ts ;
	while (msi < ms.length) {
		c = ms.charAt(msi);
		rs = ms.substring(++msi, msi +2);
		msi += 2;
		i = 0;
		while (true)	{ 
			i = str.indexOf(c, i);
			if (i == -1) break;
			ts = str.substring(0, i);
			str = ts + "%" + rs + str.substring(++i, str.length);
		}
	}
	return str;
}