Simple JS-Snippet to create random ID

makeid.js

function makeid(length)
{
    var text = "";
    var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

    for(var i=0; i < length; i++)
    {
        text += possible.charAt(Math.floor(Math.random() * possible.length));
    }

    return text;
}

function make_puphpet(prefix)
{
    return prefix + '_' + makeid(12);
}