function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
/*
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) {
	    red_menu_1 = newImage("/images/red_menu_1.jpg");
		red_menu_2_l = newImage("/images/red_menu_2_l_2.jpg");
		red_menu_2_r = newImage("/images/red_menu_2_r.jpg");
		red_menu_3 = newImage("/images/red_menu_3.jpg");
		red_menu_4_l = newImage("/images/red_menu_4_l.jpg");
		red_menu_4_r = newImage("/images/red_menu_4_r.jpg");
		red_menu_5 = newImage("/images/red_menu_5.jpg");
		red_menu_6_l = newImage("/images/red_menu_6_l.jpg");
		red_menu_6_r = newImage("/images/red_menu_6_r.jpg");
		red_menu_7 = newImage("/images/red_menu_7.jpg");
		preloadFlag = true;
	}
}




function t(){}

function nav_on(item)
{


var e = document.getElementById(item);
switch(e.id){

case "top_t_menu_2" :
  var ar = document.getElementById("top_t_menu_3");
  e.style.backgroundImage="url(/images/red_menu_1.jpg)";
  ar.style.backgroundImage="url(/images/red_menu_2_l_2.jpg)";
  break;
case "top_t_menu_4" :
 var ar = document.getElementById("top_t_menu_3");
 var ra = document.getElementById("top_t_menu_5");
  e.style.backgroundImage="url(/images/red_menu_3.jpg)";
  ar.style.backgroundImage="url(/images/red_menu_2_r.jpg)";
  ra.style.backgroundImage="url(/images/red_menu_4_l.jpg)";
  break; 
case "top_t_menu_6" :
 var ar = document.getElementById("top_t_menu_5");
 var ra = document.getElementById("top_t_menu_7");
  e.style.backgroundImage="url(/images/red_menu_5.jpg)";
  ar.style.backgroundImage="url(/images/red_menu_4_r.jpg)";
  ra.style.backgroundImage="url(/images/red_menu_6_l.jpg)";
  break;
case "top_t_menu_8" :
  var ar = document.getElementById("top_t_menu_7"); 
  e.style.backgroundImage="url(/images/red_menu_7.jpg)";
  ar.style.backgroundImage="url(/images/red_menu_6_r.jpg)";  
  break;
  }

}


function nav_out(item)
{
var e = document.getElementById(item);
switch(e.id){
 case "top_t_menu_2" :
  e.style.backgroundImage="url(/images/top_menu_1.jpg)";
  var ar = document.getElementById("top_t_menu_3");
  ar.style.backgroundImage="url(/images/top_menu_2.jpg)";
  break;
case  "top_t_menu_4" :
  e.style.backgroundImage="url(/images/top_menu_3.jpg)";
  var ar = document.getElementById("top_t_menu_3");
  ar.style.backgroundImage="url(/images/top_menu_2.jpg)";
  var ra = document.getElementById("top_t_menu_5");
  ra.style.backgroundImage="url(/images/top_menu_4.jpg)";
  break;
case "top_t_menu_6" :
  e.style.backgroundImage="url(/images/top_menu_5.jpg)";
  var ar = document.getElementById("top_t_menu_5");
  ar.style.backgroundImage="url(/images/top_menu_4.jpg)";
  var ra = document.getElementById("top_t_menu_7");
  ra.style.backgroundImage="url(/images/top_menu_6.jpg)";
  break;
case "top_t_menu_8" :
  e.style.backgroundImage="url(/images/top_menu_7.jpg)";
  var ar = document.getElementById("top_t_menu_7");
  ar.style.backgroundImage="url(/images/top_menu_6.jpg)";
  break;
}
}


function nav_link(item)
{
var e = document.getElementById(item);
switch(e.id){
case "top_t_menu_2" :
location.href="/services.php";
break;
case "top_t_menu_4" :
location.href="/tariffs.php";
break;
case "top_t_menu_6" :
location.href="/how.php";
break;
case "top_t_menu_8" :
location.href="/contacts.php";
break;
}

}


function calcChange()
{
var calcinput = document.getElementById("calc_t_input");
calcinput.value="";
calcinput.style.color="#e0e0e0";
var calc_t_return = document.getElementById("calc_t_return");
calc_t_return.style.color="#fe0000";
calc_t_return.innerHTML="";
}
/*
$(document).ready(function()
  {
  $("#top_t_menu_2").mouseover(function(){
    $("#top_t_menu_2").animate({},6000);
	$("#top_t_menu_2").css({"background-image":"url(/images/red_menu_1.jpg)"});
  });
 $("#top_t_menu_2").mouseout(function(){
    setInterval(15000);
	$("#top_t_menu_2").css({"background-image":"url(/images/top_menu_1.jpg)"});
  });
});*/