var Hoehe, Breite;

    Hoehe  = screen.height; 
	var href= document.location.href;
    Breite = screen.width;

 var cssname;

if ( Breite>=1200 && Hoehe>=1024 && false) {
  cssname1="content_big";
  cssname2="nav_big";
}else{
//  cssname1="content";
  cssname1="content_small";
  cssname2="nav_small";
}

document.write('<link rel=\"stylesheet\" href=\"/css/'+ cssname1 +'.css\" type=\"text/css\">\n');
document.write('<link rel=\"stylesheet\" href=\"/css/'+ cssname2 +'.css\" type=\"text/css\">\n');