Script long execution

Question

I have implemented a basic login screen and its working ok except that it's giving me this error and is taking long to execute:
Error: Error #1502: A script has executed for longer than the default timeout period of 15 seconds.
    at login_screen/Checklogininfo()[login_screen::frame1:34]
Script is the following:
login_error_lbl.visible = false;
login_ok_btn.addEventListener (MouseEvent.CLICK,Checklogininfo);
function Checklogininfo (event:MouseEvent):void
    while ((User_name_txtbox.text != "xx") || (Password_txtbox.text != "y")){
        login_error_lbl.visible = true;         /////////////////////////////////////////this part of the "while" is taking very long to execute
        User_name_txtbox.text = "";
        Password_txtbox.text = "";
    this.visible = false;
Any ideas how I can go about it?  Thanks!

Answer 1

Perhaps something like this. The credentials are checked each time login_ok_btn is clicked.
login_error_lbl.visible = false;
login_ok_btn.addEventListener (MouseEvent.CLICK,Checklogininfo);
function Checklogininfo (event:MouseEvent):void
   var loginValid:Boolean = ((User_name_txtbox.text == "xx") &&  (Password_txtbox.text == "y"));
// don't know if you really want to clear these fields
// might want to just leave them alone so the user can see what was typed
   User_name_txtbox.text = "";
   Password_txtbox.text = "";
   this.visible = login_error_lbl.visible = !loginValid;