Klassedefinition - Hvorfor virker dette ikke?!

Hej eksperter!

Hvorfor virker denne klassedefinition ikke?

--- Snake.as ---

class Snake {
   
    private var x:Number;
    private var y:Number;
    private var d:Number;
   
    function Snake(var sX:Number, var sY:Number, var sD:Number) {
        x = sX;
        y = sY;
        d = sD;
    }
   
    function getX() {
        return x;
    }
    function getY() {
        return y;
    }
    function setP(var nX:Number, var nY:Number) {
        x = nX;
        y = nY;
    }
   
    function getD() {
        return d;
    }
    function setDir(var nD:Number) {
        return d = nD;
    }
}

--- Output ---

**Error** C:\Documents and Settings\Toke Skovbo Krainert\Dokumenter\[PRIVAT]\Flash\Snake War\Snake.as: Line 7: Parameter name expected
        function Snake(var sX:Number, var sY:Number, var sD:Number) {

**Error** C:\Documents and Settings\Toke Skovbo Krainert\Dokumenter\[PRIVAT]\Flash\Snake War\Snake.as: Line 19: Parameter name expected
        function setP(var nX:Number, var nY:Number) {

**Error** C:\Documents and Settings\Toke Skovbo Krainert\Dokumenter\[PRIVAT]\Flash\Snake War\Snake.as: Line 27: Parameter name expected
        function setDir(var nD:Number) {

**Error** C:\Documents and Settings\Toke Skovbo Krainert\Dokumenter\[PRIVAT]\Flash\Snake War\Snake.as: Line 7: This statement is not permitted in a class definition.
        function Snake(var sX:Number, var sY:Number, var sD:Number) {

**Error** C:\Documents and Settings\Toke Skovbo Krainert\Dokumenter\[PRIVAT]\Flash\Snake War\Snake.as: Line 19: This statement is not permitted in a class definition.
        function setP(var nX:Number, var nY:Number) {

**Error** C:\Documents and Settings\Toke Skovbo Krainert\Dokumenter\[PRIVAT]\Flash\Snake War\Snake.as: Line 28: This statement is not permitted in a class definition.
            return d = nD;

**Error** C:\Documents and Settings\Toke Skovbo Krainert\Dokumenter\[PRIVAT]\Flash\Snake War\Snake.as: Line 30: ActionScript 2.0 class scripts may only define class or interface constructs.
    }

Total ActionScript Errors: 7     Reported Errors: 7

---

???