var chars = "abcdefghijlmnopqrstuvwxyzABCDEFGHIJLMNOPQRSTUVWXYZ";

var id = (function(c) {
    var ret = "";
    
    for (var i = 0; i < c; ++i)
        ret += chars[Math.floor(Math.random() * chars.length)];
        
    return ret;
})(20);
    
function openChatWindow() {
    var url = "http://messenger.providesupport.com/messenger/smartguydk.html?ps_s=" + id;
    window.open(url, "_blank", "menubar=0,location=0,scrollbars=auto,resizable=1,status=0,width=500,height=460");
}