// JavaScript Document
userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function findElement(n,ly) {
	if (browserVers < 4)		return document[n];
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (!elem) {
		for (var i=0;i<curDoc.layers.length;i++) {
			elem = findElement(n,curDoc.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		nag_08_over = newImage("img/naglowek/nag_08-over.jpg");
		nag_10_over = newImage("img/naglowek/nag_10-over.jpg");
		nag_12_over = newImage("img/naglowek/nag_12-over.jpg");
		nag_14_over = newImage("img/naglowek/nag_14-over.jpg");
		nag_16_over = newImage("img/naglowek/nag_16-over.jpg");
		nag_18_over = newImage("img/naglowek/nag_18-over.jpg");
		wysz_03_over = newImage("img/wyszukiwarka/wysz_03-over.jpg");
		wysz_04_over = newImage("img/wyszukiwarka/wysz_04-over.jpg");
		wysz_05_over = newImage("img/wyszukiwarka/wysz_05-over.jpg");
		wysz_11_over = newImage("img/wyszukiwarka/wysz_11-over.jpg");
		wysz_12_over = newImage("img/wyszukiwarka/wysz_12-over.jpg");
		wysz_13_over = newImage("img/wyszukiwarka/wysz_13-over.jpg");
		preloadFlag = true;
	}
}


function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function MM_findObj(n, d) { //v4.01
  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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_jumpMenuGo(selName,targ,restore){ //v3.0
  var selObj = MM_findObj(selName); if (selObj) MM_jumpMenu(targ,selObj,restore);
}

function oc_pull_down_menu_to() {
  var new_typ_oferty = document.advanced_search.typ_oferty.value;
  var new_termin = document.advanced_search.termin.value;
  var url = "advanced_search.php";
  
  url += "?";
  if (new_typ_oferty != "") {
    url += "typ_oferty=" + new_typ_oferty;
  }
  if (new_termin != "") {
    url += "&termin=" + new_termin;
  }
  window.location.replace(url);
}

function oc_pull_down_menu() {
  var new_typ_oferty = document.advanced_search.typ_oferty.value;
  var new_categories_id = document.advanced_search.categories_id.value;
  var new_termin = document.advanced_search.termin.value;
  var new_kateg_hot = document.advanced_search.kateg_hot.value;
  var url = "advanced_search.php";
  
  url += "?";
  if (new_typ_oferty != "") {
    url += "typ_oferty=" + new_typ_oferty;
    if (new_categories_id != "" || new_termin != "" || new_kateg_hot != "") url += "&";
  }
  if (new_categories_id != "") {
    url += "categories_id=" + new_categories_id;
    if (new_termin != "" || new_kateg_hot != "") url += "&";
  }
  if (new_termin != "") {
    url += "termin=" + new_termin;
    if (new_kateg_hot != "") url += "&";
  }
  if (new_kateg_hot != "") {
    url += "kateg_hot=" + new_kateg_hot;
  }
  window.location.replace(url);
}