function findObj(n, d) {  
  var p,i,x;  
  if(!d) d=document; 
  if((p=n.indexOf("?"))>0&&parent.frames.length) { 
    d=parent.frames[n.substring(p+1)].document; 
    n=n.substring(0,p);
  } 
  if(!(x=d[n])&&d.all) x=d.all[n]; 
  for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n]; 
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document); 
  if(!x && document.getElementById) x=document.getElementById(n); 
  
  return x; 
} 



function zmenaNahledu(tip,k,sort,search) {
  var url="";
  url="sort="+sort;
  if (search!="") {
    if (url!=""){
      url=url+"&";
    }
    url=url+"search="+search
  }
  if (url!="") {
    url="&"+url;
  }
  document.location="index.php?tip="+tip+"&sort="+sort+"&out="+findObj('pokazi').value;
}