var $wscr = window.screen.width;
if ($wscr < 900) {
	document.write("<link rel=\"stylesheet\" type=\"text/css\" href=\"./sm/script.css\" />");
   }
else if ($wscr > 1100) {
	document.write("<link rel=\"stylesheet\" type=\"text/css\" href=\"./bg/script.css\" />");
   }
else {
	document.write("<link rel=\"stylesheet\" type=\"text/css\" href=\"./script.css\" />");
   }