var NS = (navigator.appName.indexOf("Netscape")!=-1);
var MS = (navigator.appName.indexOf("Microsoft")!=-1);
var VER=parseInt(navigator.appVersion);
var CSS=((MS&&VER>=4)||(NS&&VER>=5));
var NS4=(NS&&VER==4);
var NS6=(NS&&VER==5);
var IE4=(MS&&VER==4);
var IE5=(MS&&VER==5);
var IE6=(MS&&VER==6);
var ver4= (VER>=4&&(MS||NS));
var ver5=((MS&&VER>=5)||(NS&&VER>=5));

var checker = false;
	function nav_active(ids)
	{
		if(ids==1){
			document.getElementById('nav_td1_1').className = "top_menu3_item_a";
			document.getElementById('nav_td2_1').className = "top_menu3_da";
		}
		else{
			document.getElementById('nav_td1_1').className = "top_menu3_item";
			document.getElementById('nav_td2_1').className = "top_menu3_d";
		}
		
		if(ids==2){
			document.getElementById('nav_td1_2').className = "top_menu3_item_a";
			document.getElementById('nav_td2_2').className = "top_menu3_da";
		}
		else{
			document.getElementById('nav_td1_2').className = "top_menu3_item";
			document.getElementById('nav_td2_2').className = "top_menu3_d";
		}
		
		if(ids==3){
			document.getElementById('nav_td1_3').className = "top_menu3_item_a";
			document.getElementById('nav_td2_3').className = "top_menu3_da";
		}
		else{
			document.getElementById('nav_td1_3').className = "top_menu3_item";
			document.getElementById('nav_td2_3').className = "top_menu3_d";
		}
		
		if(ids==4){
			document.getElementById('nav_td1_4').className = "top_menu3_item_a";
			document.getElementById('nav_td2_4').className = "top_menu3_da";
		}
		else{
			document.getElementById('nav_td1_4').className = "top_menu3_item";
			document.getElementById('nav_td2_4').className = "top_menu3_d";
		}
	}

function checkAll( objid ) 
{
	var reverse = false;

	if (MS) var id_pre = 'itemslist.';
	else var id_pre= '';	
	
	if ( IE4 ) {
		whichEl = eval(id_pre+objid);
	} else {
		whichEl = document.getElementById(id_pre+objid);
	}	

	if (whichEl.checked == true) reverse = true;
	else reverse = false;
	
	if ( IE4 ) {
		whichEl = eval('itemslist');
	} else {
		whichEl = document.getElementById('itemslist');
	}
		
	var c = whichEl.length;

	for (i=0; i < c; i++) 
	if (whichEl.elements[i].type=='checkbox' && !whichEl.elements[i].disabled)
	{

			whichEl.elements[i].checked = reverse;
	}
}

function checkAllTracks( objid ) 
{
	if ( IE4 ) {
		whichEl = eval('itemslist');
	} else {
		whichEl = document.getElementById('itemslist');
	}
		
	var c = whichEl.length;

	for (i=0; i < c; i++) 
	if (whichEl.elements[i].type=='checkbox' && !whichEl.elements[i].disabled)
	{
			if (whichEl.elements[i].checked)
			{
				whichEl.elements[i].checked = false;
			}
			else
			{
				whichEl.elements[i].checked = true;
			}
	}
}

function addjetuneFirefoxSearch(name,ext,cat)
{
 if ((typeof window.sidebar == "object") && (typeof
 window.sidebar.addSearchEngine == "function"))
 {
 window.sidebar.addSearchEngine("http://www.jetune.ru/firefox/jetune.ru.src", "http://www.jetune.ru/images/logo_16_16.png", "www.Jetune.ru", "General" );
 }
 else
 {
 alert('www.Jetune.ru - Mozilla Firefox');
 }
}

function addjetuneIElSearch()
{
	var strQuery = "Encoding="+ encodeURIComponent("Windows-1251") + "&Name=" + encodeURIComponent("Jetune") + "&URI="  + encodeURIComponent("http://www.jetune.ru/searchnow?ms_search_text=TEST");
	var strAddURI = "http://www.microsoft.com/windows/ie/searchguide/spbuilder.mspx?" + strQuery;
	//alert(strAddURI);
	try{
	window.external.AddSearchProvider(strAddURI);
	}
	catch(eX){
	 	alert('www.Jetune.ru - Internet Explorer');
	}
}

function jetune_correct_error_window(url)
{
	window.open(url,"jterrcorrect","scrollbars=yes, status=no, top=100, left=100, width=550, height=500, resizable=1","replace=yes");
	return ralse;
}
function jetune_to_mobile_window(url)
{
	window.open(url,"jtmobile","scrollbars=no, status=no, top=200, left=200, width=450, height=230, resizable=1","replace=no");
	return ralse;
}