AS3 Error: Else is unexpected

You are missing a bunch of closing curly braces for your if statements. This is probably what you are trying to achieve:

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stage.addEventListener(KeyboardEvent.KEY_DOWN, EnterKeyDown);

function EnterKeyDown(event: KeyboardEvent): void {

       if (event.keyCode == Keyboard.ENTER) {

            if (Number(team1.taskai1.text) > 100 == Number(team1.taskai1.text) < 1000) {

                 var komanda1: Number = (Number(team1.taskai1.text) + Number(team1.suma1.text)) - 100;

                 suma1_number = komanda1;

                 team1.suma1.text = String(komanda1);

                 team1.taskai1.text = "";

            } else if (Number(team1.taskai1.text) > 1000) {

                 var komandaA1: Number = (Number(team1.taskai1.text) + Number(team1.suma1.text)) - 1000;

                 suma1_number = komandaA1;

                 team1.suma1.text = String(komandaA1);

                 team1.taskai1.text = "";

            } else {

                 team1.taskai1.text = "";

            }

            if (Number(team2.taskai2.text) > 200 == Number(team1.taskai1.text) < 2000) {

                 var komanda2: Number = (Number(team2.taskai2.text) + Number(team2.suma2.text)) - 200;

                 suma2_number = komanda2;

                 team2.suma2.text = String(komanda2);

                 team2.taskai2.text = "";

            } else if (Number(team2.taskai2.text) > 2000) {

                 var komandaA2: Number = (Number(team2.taskai2.text) + Number(team2.suma2.text)) - 2000;

                 suma2_number = komandaA2;

                 team2.suma2.text = String(komandaA2);

                 team2.taskai2.text = "";

            } else {

                 team2.taskai2.text = "";

            }

            if (Number(team3.taskai3.text) > 300 == Number(team3.taskai3.text) < 3000) {

                 var komanda3: Number = (Number(team3.taskai3.text) + Number(team3.suma3.text)) - 300;

                 suma3_number = komanda3;

                 team3.suma3.text = String(komanda3);

                 team3.taskai3.text = "";

           } else if (Number(team3.taskai3.text) > 3000) {

                 var komandaA3: Number = (Number(team3.taskai3.text) + Number(team3.suma3.text)) - 3000;

                 suma3_number = komandaA3;

                 team3.suma3.text = String(komandaA3);

                 team3.taskai3.text = "";

            } else {

                 team3.taskai3.text = "";

            }

       }

}

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