if(screen.width < 800)
		document.write('<script language="JavaScript" type="text/javascript" src="b600.php"></script>')
	else 
		if(screen.width == 800)
		document.write('<script language="JavaScript" type="text/javascript" src="b800.php"></script>')
	else 
		if(screen.width >= 801 && screen.width <= 1023)
		document.write('<script language="JavaScript" type="text/javascript" src="b900.php"></script>')
	else 
		if(screen.width == 1024)
		document.write('<script language="JavaScript" type="text/javascript" src="b1000.php"></script>')
	else 
		if(screen.width >= 1025 && screen.width <= 1151)
		document.write('<script language="JavaScript" type="text/javascript" src="b1050.php"></script>')
	else 
		if(screen.width == 1152)
		document.write('<script language="JavaScript" type="text/javascript" src="b1100.php"></script>')
	else 
		if(screen.width >= 1153 && screen.width <= 1279)
		document.write('<script language="JavaScript" type="text/javascript" src="b1250.php"></script>')
	else 
		if(screen.width == 1280)
		document.write('<script language="JavaScript" type="text/javascript" src="b1200.php"></script>')
	else 
		if(screen.width >= 1281)
		document.write('<script language="JavaScript" type="text/javascript" src="b1300.php"></script>')