function get_IE_left(){
var window_width;
var mleft;
mleft = 126;
window_width = document.body.clientWidth;
if (window_width <= 780) {
  mleft = 126;
}else {
  mleft = mleft + ((window_width-780) / 2);
}
return mleft;
}

function fix(){
Layer1.style.left = get_IE_left()
}