function screenwidth()
{    

document.getElementById("a101").style.left  = screen.width / 2 - 222 + "px";
document.getElementById("a102").style.left  = screen.width / 2 - 207 + "px";

document.getElementById("a201").style.left  = screen.width / 2 - 225 + "px";
document.getElementById("a202").style.left  = screen.width / 2 - 100 + "px";
document.getElementById("a203").style.left  = screen.width / 2 + 115 + "px";
document.getElementById("a204").style.left  = screen.width / 2 + 35 + "px";
document.getElementById("a205").style.left  = screen.width / 2 + 55 + "px";
document.getElementById("a206").style.left  = screen.width / 2 + 75 + "px";
document.getElementById("a207").style.left  = screen.width / 2 + 95 + "px";

document.getElementById("a301").style.left  = screen.width / 2 - 390 + "px";
document.getElementById("a302").style.left  = screen.width / 2 - 308 + "px";
document.getElementById("a303").style.left  = screen.width / 2 - 344 + "px";

document.getElementById("a401").style.left  = screen.width / 2 - 250 + "px";
document.getElementById("a402").style.left  = screen.width / 2 - 400 + "px";
document.getElementById("a403").style.left  = screen.width / 2 + 249 + "px";
document.getElementById("a404").style.left  = screen.width / 2 + 275 + "px";

document.getElementById("a501").style.left  = screen.width / 2 - 225 + "px";
document.getElementById("a502").style.left  = screen.width / 2 - 100 + "px";

document.getElementById("a601").style.left  = screen.width / 2 + 275 + "px";

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

}