if (screen.width>=1280)
     {
        document.write ('<style type="text/css">');
		document.write ('<!--');
		document.write ('body {');
   	    document.write ('	margin-top: 0px;');
		document.write ('	margin-left: 0px;');
		document.write ('	margin-right: 0px;');
		document.write ('	background-image: url(images/bgb.gif);');
		document.write ('	background-position: center;');
		document.write ('}');
		document.write ('-->');
		document.write ('</style>');
     }
  if (screen.width<=1024)
    {
        document.write ('<style type="text/css">');
		document.write ('<!--');
		document.write ('body {');
   	    document.write ('	margin-top: 0px;');
		document.write ('	margin-left: 0px;');
		document.write ('	margin-right: 0px;');
		document.write ('	background-image: url(images/bg.gif);');
		document.write ('	background-position: center;');
		document.write ('}');
		document.write ('-->');
		document.write ('</style>');
     }
  if (screen.width<=800)
    {
        document.write ('<style type="text/css">');
		document.write ('<!--');
		document.write ('body {');
   	    document.write ('	margin-top: 0px;');
		document.write ('	margin-left: 0px;');
		document.write ('	margin-right: 0px;');
		document.write ('	backcolor: #000000;');
		document.write ('}');
		document.write ('-->');
		document.write ('</style>');
     }