if (screen.width>800) {
    var odl;
    odl = (screen.width/2)-180;
     document.write("<style type=\"text/css\">\n");
     document.write(".w755 { width: 950px; }\n");
     document.write(".w355 { width: 550px; }\n");
     document.write(".w400 { width: 550px; }\n");
     document.write("#tnag2 { width: 855px; margin: 15px, 30px, 0, 0; padding: 0;}\n");
     document.write(".tstop3 { width: 820px }\n");
     document.write(".pocz { left: "+odl+"px; }");
     document.write(".h1p { left: "+odl+"px; }");
     document.write("</style>\n");
}