function screenwidth()
{    
document.getElementById("a5").style.left  = screen.width / 2 - 390 + "px";
document.getElementById("a6").style.left  = screen.width / 2 - 260 + "px";
document.getElementById("a7").style.left  = screen.width / 2 - 130 + "px";
document.getElementById("a8").style.left  = screen.width / 2 - 0 + "px";
document.getElementById("a9").style.left  = screen.width / 2 + 130 + "px";

document.getElementById("a12").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a13").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a14").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a15").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a16").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a17").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a18").style.left  = screen.width / 2 - 381 + "px";
document.getElementById("a19").style.left  = screen.width / 2 - 75 + "px";
document.getElementById("a20").style.left  = screen.width / 2 - 75 + "px";
document.getElementById("a21").style.left  = screen.width / 2 - 131 + "px";
document.getElementById("a22").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a23").style.left  = screen.width / 2 - 130 + "px";

document.getElementById("a40").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a41").style.left  = screen.width / 2 - 307 + "px";
document.getElementById("a42").style.left  = screen.width / 2 - 359 + "px";
document.getElementById("a43").style.left  = screen.width / 2 - 305 + "px";
document.getElementById("a46").style.left  = screen.width / 2 - 271 + "px";

document.getElementById("a51").style.left  = screen.width / 2 - 177 + "px";

document.getElementById("a100").style.left  = screen.width / 2 - 75 + "px";
document.getElementById("a101").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a102").style.left  = screen.width / 2 - 297 + "px";
document.getElementById("a104").style.left  = screen.width / 2 + 124 + "px";
document.getElementById("a105").style.left  = screen.width / 2 + 226 + "px";
document.getElementById("a106").style.left  = screen.width / 2 + 342 + "px";

document.getElementById("a150").style.left  = screen.width / 2 - 400 + "px";

document.getElementById("a165").style.left  = screen.width / 2 - 380 + "px";
document.getElementById("a166").style.left  = screen.width / 2 - 370 + "px";
document.getElementById("a167").style.left  = screen.width / 2 - 175 + "px";
document.getElementById("a168").style.left  = screen.width / 2 - 130 + "px";
document.getElementById("a169").style.left  = screen.width / 2 + 30 + "px";
document.getElementById("a170").style.left  = screen.width / 2 + 72 + "px";
document.getElementById("a171").style.left  = screen.width / 2 + 227 + "px";
document.getElementById("a172").style.left  = screen.width / 2 + 260 + "px";

document.getElementById("a409").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a410").style.left  = screen.width / 2 - 131 + "px";

document.getElementById("a411").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a412").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a413").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a414").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a415").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a416").style.left  = screen.width / 2 - 400 + "px";

document.getElementById("a2500").style.left  = screen.width / 2 - 400 + "px";

document.getElementById("a3000").style.visibility  = "hidden";

}