// JScript source code
if (screen.width <= 719) { 
document.write('<link rel="stylesheet" href="bgc640.css">'); 
} 
if ((screen.width >= 720) && (screen.width <= 920)) { 
document.write('<link rel="stylesheet" href="bgc800.css">'); 
} 
if ((screen.width >= 921) && (screen.width <= 1150)) { 
document.write('<link rel="stylesheet" href="bgc1024.css">'); 
} 
if ((screen.width >= 1151) && (screen.width <= 1450)) { 
document.write('<link rel="stylesheet" href="bgc1280.css">'); 
} 
if (screen.width >= 1451) { 
document.write('<link rel="stylesheet" href="bgc1600.css">'); 
}