function lookFX(){ 
  unsup = 0;
  var br = navigator.appName;
  var ap = navigator.appVersion;
  var br1 = -1;
  var br2 = -1;
  var br3 = -1;
  br1 = br.search(/Mobile/);
  if (br == "Opera") {
    br2 = ap.search(/1.0/);
  }
  if (br == "Microsoft Internet Explorer") {
    br3 = ap.search(/MSIE 6.0/);
  }
  if ((br1 > -1) || (br2 > -1) || (br3 > -1)) {
    unsup = 1;
  }  
  if (unsup == 0) {
   document.getElementById("div_fx").style.background="url(\'/images_static/but_fx1.jpg\') no-repeat";
   document.getElementById("div_fx").innerHTML="<a href=\"?tryb=f\"><div style=\"border:0px solid #000000; width:90px; height:90px; margin-top:27px; cursor:pointer;\"></div></a><br />Przejdź do strony wizualnej";
	}
}