var max_height = 589;

if(is.ns4 || is.ns6) {
available_width = innerWidth;
available_height = innerHeight;
}
else if(is.ie4 || is.ie5|| is.ie6) {
available_width=document.body.clientWidth;
available_height=document.body.clientHeight;
}
if(is.ie4 || is.ie5 || is.ns6 || is.ns4) {
  if (available_height < max_height) {
  image1_height = (available_height * 1.00);
  }
  else if (available_height >= max_height) {
  image1_height = max_height
  }
image1_width = ((image1_height * 1.33) - (0 * (available_width / available_height)));
var image1 = '<img src="gfx/bg/bg_00.jpg" width="' + image1_width + '" height="' + image1_height + '">';
document.write(image1);
}