$(document).ready(function() {
 if ((screen.width==1024) && (screen.height==768))
 {
 // alert('Screen size: 1024x768');
  $("link[rel=stylesheet]:not(:first)").attr({href : "css/1024.css"});
 }
 else if ((screen.width==1280) && (screen.height==1024))
 {
 // alert('Screen size: 1280x1024');
  $("link[rel=stylesheet]:not(:first)").attr({href : "css/1280.css"});
 }
 else if ((screen.width==1680) && (screen.height==1050))
 {
  //alert('Screen size: 1680x1050');
  $("link[rel=stylesheet]:not(:first)").attr({href : "css/1680.css"});
 }
 else if ((screen.width==1920) && (screen.height==1200))
 {
  //alert('Screen size: 1920x1200');
  $("link[rel=stylesheet]:not(:first)").attr({href : "css/1920.css"});
 }
 else if ((screen.width==320) && (screen.height==480))
 {
 //alert('Screen size: 320x480');
  $("link[rel=stylesheet]:not(:first)").attr({href : "css/320.css"});
 }
 else if ((screen.width==480) && (screen.height==320))
 {
  //alert('Screen size: 480x320');
  $("link[rel=stylesheet]:not(:first)").attr({href : "css/480.css"});
 }
});