function externalLinks() { 
 if (!document.getElementsByTagName) return; 
 var anchors = document.getElementsByTagName("a"); 
 for (var i=0; i<anchors.length; i++) { 
   var anchor = anchors[i]; 
   if (anchor.getAttribute("href") && 
       anchor.getAttribute("rel") == "ext_link") 
     anchor.target = "_blank"; 
 } 
}



function messageAnswer(messageId, messageTitle, parentMessageInfo){
	document.getElementById('input_message').innerHTML = messageTitle + ": <br />" + parentMessageInfo;
	document.getElementById('parent_message_id').value = messageId;
	return true;
}

function sendForm(id){
	document.getElementById(id).submit();
	return false;
}

//JavaScript Document
function insertIntoField(field,what,rewrite,defaultValue){
  if ((rewrite=='true'&&field.value==defaultValue)||(rewrite=='false'&&field.value=='')) field.value=what;
}

function onclickChange(id,type){
  var element = document.getElementById(id);
  if (type=='radio') element.checked=true;
  else if (type=='field') element.focus();
}

function changeImage(source, width, height){
	var elem = document.getElementById('bigImageForChange');
	elem.src = source;
	return false;
}

function advertMainSearch(type){
	
	for (var i=0;i<3;i++){
		
		var elIt = document.getElementById("advert_main_item_"+i);
		var el = document.getElementById("advert_main_search_"+i);
		if (i == type) {
			el.style.display="block";
			elIt.className="active";
			document.getElementById("rubrika"+i).focus();
		}
		else {
			el.style.display="none";
			elIt.className="";
		}
		
	}
	
	return false;
}

/*
Funkce se pouziva u selectBoxu. 
Zobrazi ci schova what
*/
function onTypeChange(value,what,compare) {
		for (i in what){
			if (value == compare) { 
				if (window.innerHeight) { // mozilla + opera
					document.getElementById(what[i]).style.display = "table-row";
				} else { // explorer (nepodporuje v css hodnotu table-row)
					document.getElementById(what[i]).style.display = "block";
				}
			}
			else { 
				document.getElementById(what[i]).style.display = "none";
			}
		}
}

function showOrHideInTable(id,tr){
	var el = document.getElementById(id);
	
	var hide = 0;
	
	if (el.style.display=="table-row"||
			el.style.display=="block"||
			el.style.display=="table-cell") 
				hide=1;
	
	if (hide == 0){
		if (tr == 1){
			if (window.innerHeight) { // mozilla + opera
				el.style.display = "table-row";
			} else { // explorer (nepodporuje v css hodnotu table-row)
				el.style.display = "block";
			}
		}
		else {
			if (window.innerHeight) { // mozilla + opera
				el.style.display = "block";
			} else { // explorer (nepodporuje v css hodnotu table-row)
				el.style.display = "block";
			}
		}
	}
	else 
		el.style.display = "none";
	
}

/*
Hlaska pro odkliknuti
*/
function confirmDeleteUrlText(url, text) {
	if (confirm(text)) {
		window.location = url;
	}
}

function hideOrShow(id,type){
	
	if (type==undefined) type="inline";
	
	var show = document.getElementById(id);
	
	if (show == null) return;
	
	if (show.style.display=='none') show.style.display=type;
	else show.style.display="none";
}

function switchId(id,idh){
	hideOrShow(id);
	hideOrShow(idh);
	
	return false;
}
function insertData(select,idTo,suffix){
	var value = select[select.selectedIndex].value;
	var text = select[select.selectedIndex].text;
	
	if (suffix!=undefined) text += " "+suffix;
	
	var el = document.getElementById(idTo);

	if (el.innerHTML == ""){
		el.value = text;
	} else
		el.innerHTML = text;
}


function changeCities(idArea){
	$.ajax({
	    url: 'include/cities.php?id='+idArea,
	    type: 'GET',
	    dataType: 'xml',
	    timeout: 1000,
	    error: function(){
	        alert('Error loading XML document');
	    },
	    success: function(xml){
	    	$('#advert_cities_to_change').empty();
	    	$('#advert_cities_to_change1').empty();
	        $('#advert_cities_to_change1')
        		.append("<option value=\"\"></option>");
	    	
	    	$(xml).find('city').each(function(){
	            var name = $(this).attr("name");
	            var id = $(this).attr("id");

	            $('#advert_cities_to_change')
	            	.append("<option value=\""+id+"\">"+name+"</option>");
	            $('#advert_cities_to_change1')
            	.append("<option value=\""+id+"\">"+name+"</option>");
	        });
	    }
	});

	
}