var get_from_uri;
  // First, we load the URL into a variable
  var url = window.location.href;

  // Next, split the url by the ?
  var qparts = url.split("?");

  // Check that there is a querystring, return "" if not
  if (qparts.length == 2)
  {
	  // Then find the querystring, everything after the ?
	  var query = qparts[1];

	  // Split the query string into variables (separates by &s)
	  var vars = query.split("&");
		  // Initialize the value with "" as default
		  var get_from_uri = "";

		  // Iterate through vars, checking each one for varname
	  	  for (i=0;i<vars.length;i++)
	  	  {
		  	// Split the variable by =, which splits name and value
			var parts = vars[i].split("=");
			var varname='IdSkat';
			//var idregion='IdReg';
			// Check if the correct variable
	    	if (parts[0] == varname)
	    	{
	      		// Load value into variable
	      		get_from_uri = parts[1];

	      		// End the loop
	      		break;
	    	}
	    	//if (parts[0] == idregion)
	    	//{
	      		// Load value into variable
	      	//	str = parts[1];
	     	 	// End the loop
	      	//	break;
	    	//}
	  	  }

	  // Convert escape code
	  get_from_uri = unescape(get_from_uri);
	  //idregion = unescape(get_from_uri);
	   //alert ('get_from-uri='+get_from_uri);
	 //alert ('id regije='+idregion);
	  // Convert "+"s to " "s
	  get_from_uri.replace(/\+/g," ");
	  //idregion.replace(/\+/g," ");


  }

var xmlHttp
function showkat(str)
{

if (str.length==0)
  {
  document.getElementById("kategorija").innerHTML="";
  return;
  }
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }
var url="oglasi_ajax.php";
url=url+"?kat="+str;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChangedd
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}

function stateChangedd()
{
if (xmlHttp.readyState==4)
{
	var kat = document.getElementById('kategorija').value;
zacasna=xmlHttp.responseText;
elementi=zacasna.split('|');
if(kat !='-1'){
document.getElementById('pod_kategorija').style.display = 'block';
}else{document.getElementById('pod_kategorija').style.display = 'none';}
var r;
for(r=document.getElementById('IdSkat').options.length-1;r>=0;r--)
{
	document.getElementById('IdSkat').remove(r);

}
for(i=0;i<elementi.length;i++)
{
	value = elementi[i].split(':');
	//var getselected = value[0]==get_from_uri ? true : false;
	document.getElementById('IdSkat').options[i]= new Option(value[1],value[0]);
    		if (get_from_uri==value[0]) {

    			document.getElementById('IdSkat').options[i].selected=true
    			}
	
}
}
}
function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}