var fr2source = '';
var fr1source = 'regions.php';
var fr3source = '';
var fr4source = '';
var ressource = '';

function show(el) {
	document.getElementById(el).style.visibility = "visible";
}
function hide(el) {
   document.getElementById(el).style.visibility="hidden";
}
function reStart1 () {
	hide("f3");
	hide("f4");
	show("step2");
	show("f2");
	hide("step1");
	hide("step3");
	/*
	if(parent.document.getElementById("mypage"))
		parent.mypage_content = parent.document.getElementById("mypage").innerHTML;
	*/
}

function add_to_url(parametr,value,url){
	if(url.indexOf("?")==-1){
		url=url+"?"+parametr+"="+value;
	}else{
		if(url.indexOf(parametr)==-1){
			url = url+"&"+parametr+"="+value;
		}else{
			var param = "&"+parametr+"=";
			var last =url.substr(url.indexOf(param)+param.length,2);
			url = url.replace("&"+parametr+"="+last,param+value)
		}
	}
	return url;
}

function langRu () {
	hide("lang_en");
	show("lang_ru");
	reStart1();
	var src = fr2source;
	src = add_to_url('lan','ru',src)
	loadEl("f2",src);
	rePoisk();
	if(parent.document.getElementById("mypage")){
		parent.document.getElementById("mypage").innerHTML=parent.mypage_content;
	}
	rePoisk();
}
function langEn () {
	hide("lang_ru");
	show("lang_en");
	reStart1();
	var src = fr2source;
	src = add_to_url('lan','en',src)
	loadEl("f2",src);
	rePoisk();
		if(parent.document.getElementById("mypage")){
		parent.document.getElementById("mypage").innerHTML=parent.mypage_content;
	}
	rePoisk();
}