var st = new Array();

st.push(3);
st.push(2);
st.push(1);

document.writeln( "<p>" + st + "</p>" );
document.writeln( "<p>" + st.shift() + "</p>" );
document.writeln( "<p>" + st + "</p>" );
document.writeln( "<p>" + st.shift() + "</p>" );
document.writeln( "<p>" + st.shift() + "</p>" );