function getBrowserWidth(){
		if (window.innerWidth){
			return window.innerWidth;}	
		else if (document.documentElement && document.documentElement.clientWidth != 0){
			return document.documentElement.clientWidth;	}
		else if (document.body){return document.body.clientWidth;}		
			return 0;
	}

var browserWidth = getBrowserWidth();

if (browserWidth < 810)  {
  document.write('<link rel="stylesheet" type="text/css" href="http://www.prokuratorzy.net/Themes/prokurator/css/800.css">');
}
else if ((browserWidth > 810) && (browserWidth < 1100))  {
  document.write('<link rel="stylesheet" type="text/css" href="http://www.prokuratorzy.net/Themes/prokurator/css/1024.css">');
}
else if ((browserWidth > 1100) && (browserWidth < 1300))  {
  document.write('<link rel="stylesheet" type="text/css" href="http://www.prokuratorzy.net/Themes/prokurator/css/1280.css">');
}
else if ((browserWidth > 1300) && (browserWidth < 1500))  {
  document.write('<link rel="stylesheet" type="text/css" href="http://www.prokuratorzy.net/Themes/prokurator/css/1440.css">');
}
else  {
  document.write('<link rel="stylesheet" type="text/css" href="http://www.prokuratorzy.net/Themes/prokurator/css/1680.css">');
}