function sd() {
var dane=new String();
if (screen)
 {if (screen.width && screen.colorDepth) dane+='&e='+screen.width+'x'+screen.height+'&k='+screen.colorDepth;}
dane+="&f=";
if(typeof Error != 'undefined') {
eval("try {if (top && top.document && top.document.URL) {dane+=top.document.URL} } catch(exception) {}");
} else if(top.document.URL) {dane+=top.document.URL;}
return dane;
}