gui

private var buttonWidth:int = 200;
private var buttonHeigh:int = 50;
private var spacing:int = 100;
function OnGUI()
{
    if (GUI.Button(Rect(Screen.width/2 - buttonWidth/2, Screen.heigth/2 - buttonHeigh/2 - spacing, buttonHeigh, buttonWidth), "New Game"))
    {
       Application.LoadLevel("gamelvl1");
    }
}