<script type="text/javascript">
var highres = "High resolution style sheet";
var lowres = "low resolution style sheet";
function high()
{
document.write('<link rel="stylesheet" type="text/css" href="css' + highres + '.css">'');
}
function low()
{
document.write('<link rel="stylesheet" type="text/css" href="css' + lowres + '.css">'');
}
var screen = (screen.width<1024) ? low() : high();
</script>