function screenwidth()
{
document.getElementById("typewriter").style.left  = screen.width / 2 - 312 + "px";    
document.getElementById("a2").style.left  = screen.width / 2 - 512 + "px";
document.getElementById("a3").style.left  = screen.width / 2 - 482 + "px";
document.getElementById("a4").style.left  = screen.width / 2 - 482 + "px";
document.getElementById("a5").style.left  = screen.width / 2 - 312 + "px";
document.getElementById("a6").style.left  = screen.width / 2 - 472 + "px";
document.getElementById("a7").style.left  = screen.width / 2 - 477 + "px";
document.getElementById("a8").style.left  = screen.width / 2 - 309 + "px";
document.getElementById("a9").style.left  = screen.width / 2 - 314 + "px";
document.getElementById("a10").style.left  = screen.width / 2 - 452 + "px";
document.getElementById("a11").style.left  = screen.width / 2 - 425 + "px";
document.getElementById("a12").style.left  = screen.width / 2 - 260 + "px";
document.getElementById("a13").style.left  = screen.width / 2 - 247 + "px";
document.getElementById("a14").style.left  = screen.width / 2 - 70 + "px";
document.getElementById("a15").style.left  = screen.width / 2 - 55 + "px";
document.getElementById("a16").style.left  = screen.width / 2 + 120 + "px";
document.getElementById("a17").style.left  = screen.width / 2 + 130 + "px";
document.getElementById("a18").style.left  = screen.width / 2 + 310 + "px";
document.getElementById("a19").style.left  = screen.width / 2 + 355 + "px";
document.getElementById("a20").style.left  = screen.width / 2 - 450 + "px";
document.getElementById("a21").style.left  = screen.width / 2 - 285 + "px";
document.getElementById("a24").style.left  = screen.width / 2 - 482 + "px";
document.getElementById("a25").style.left  = screen.width / 2 - 280 + "px";
document.getElementById("a30").style.left  = screen.width / 2 + 120 + "px";
document.getElementById("a31").style.left  = screen.width / 2 + 145 + "px";
document.getElementById("a32").style.left  = screen.width / 2 + 120 + "px";
document.getElementById("a33").style.left  = screen.width / 2 + 145 + "px";
document.getElementById("a34").style.left  = screen.width / 2 + 120 + "px";
document.getElementById("a35").style.left  = screen.width / 2 + 150 + "px";
document.getElementById("a36").style.left  = screen.width / 2 + 120 + "px";
document.getElementById("a37").style.left  = screen.width / 2 + 140 + "px";
document.getElementById("a45").style.left  = screen.width / 2 + 120 + "px";
document.getElementById("a50").style.left  = screen.width / 2 + 120 + "px";
document.getElementById("a51").style.left  = screen.width / 2 + 285 + "px";
document.getElementById("a54").style.left  = screen.width / 2 + 125 + "px";
document.getElementById("a55").style.left  = screen.width / 2 + 310 + "px";
document.getElementById("a70").style.left  = screen.width / 2 + 320 + "px";
document.getElementById("a100").style.visibility  = "hidden";
}