var d = screen.width
if (d<900)
{
document.write('<script type="text/javascript" src="javascript/change1.js"></script>');
}
else if (d<1100)
{
document.write('<script type="text/javascript" src="javascript/change2.js"></script>');
}
else
{
document.write('<script type="text/javascript" src="javascript/change2.js"></script>');
}