$(document).ready(function() {
if (screen.width<800)
{
$("link[rel=stylesheet]:not(:first)").attr({href : "mobile.css"});
}
else if ((screen.width>=800) && (screen.width<1024))
{
$("link[rel=stylesheet]:not(:first)").attr({href : "800.css"});
}
else if ((screen.width>=1024) && (screen.width<1280))
{
$("link[rel=stylesheet]:not(:first)").attr({href : "1024.css"});
}
else if ((screen.width>=1280) && (screen.width<1360))
{
$("link[rel=stylesheet]:not(:first)").attr({href : "1280.css"});
}
else if ((screen.width>=1360) && (screen.width<1400))
{
$("link[rel=stylesheet]:not(:first)").attr({href : "1360.css"});
}
else if ((screen.width>=1400) && (screen.width<1440))
{
$("link[rel=stylesheet]:not(:first)").attr({href : "1400.css"});
}
else if ((screen.width>=1440) && (screen.width<1600))
{
$("link[rel=stylesheet]:not(:first)").attr({href : "1440.css"});
}
else if ((screen.width>=1600) && (screen.width<1680))
{
$("link[rel=stylesheet]:not(:first)").attr({href : "1600.css"});
}
else if ((screen.width>=1680) && (screen.width<1800))
{
$("link[rel=stylesheet]:not(:first)").attr({href : "1680.css"});
}
else
{

}
});