function random_string(string_length) {
	var chars			= '0123456789abcdefghiklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXTZ';
	var output			= '';
	
	for (var i = 0; i < string_length; i++) {
		var rnum	= Math.floor(Math.random() * chars.length);
		output		+= chars.substring(rnum,rnum+1);
	}
	
	return output;
}