function get_n(id,l_id,class_name) {
  id.className=class_name;
  var t = (class_name == 'over') ? 'none' : 'underline';
  var t2 = (class_name == 'over') ? '#fff' : '#E9E9E9';
  document.getElementById(l_id).style.textDecoration=t;
  document.getElementById(l_id).style.color=t2;
}

//-------------------------------------------------------
/*
function now() {//выравнивание блоков на главной странице
var block_1l = document.getElementById('block1_left');
var block_1r = document.getElementById('block1_right');
var block_2l = document.getElementById('block2_left');
var block_2r = document.getElementById('block2_right');

if (block_1l.offsetHeight < block_1r.offsetHeight) {
 block_1l.style.height=block_1r.offsetHeight-30+'px';
 block_1l.style.height=block_1l.offsetHeight-30+'px';
}
if (block_1l.offsetHeight > block_1r.offsetHeight) {
 block_1r.style.height=block_1l.offsetHeight-30+'px';
 block_1l.style.height=block_1l.offsetHeight-30+'px';
}

if (block_2l.offsetHeight < block_2r.offsetHeight) {
 block_2l.style.height=block_2r.offsetHeight-30+'px';
 block_2l.style.height=block_2l.offsetHeight-30+'px';
}
if (block_2l.offsetHeight > block_2r.offsetHeight) {
 block_2r.style.height=block_2l.offsetHeight-30+'px';
 block_2l.style.height=block_2l.offsetHeight-30+'px';
}
}
*/

//-------------------------------------------------------

//перезагрузка страницы если що не так
function reload_page() {
 var p = location.href;
 var t;
 if (p.lastIndexOf("#") != -1) t = p.substring(0,p.length-1);
 else t = p;
 location.href=t;
}

function bag_opera() {if (opera) location.href=location.href}

//установка необходимого предела чтобы да неналезали блоки позиционирования за пределы
function check_block() {
 var obj = document.getElementById('left_menu');
 var main = document.getElementById('main');
 var content = document.getElementById('content');
 if (obj.offsetHeight > content.offsetHeight) {
   main.style.height=obj.offsetHeight+'px';
 } //main.style.height=main.offsetHeight-120+'px';
}



function getUrl(id,v) {
  path=document.getElementById(id).href;
  //window.open(path,"tar"); open in window
  if (path != "" || path !="#") location.href=path; //open in self
 }


// поверка с каким броузером работаем
var nav = navigator.userAgent;
nav = nav.toLowerCase();
var opera = false;
var ie = false;
var nets = false;
if (nav.indexOf("opera") != -1) opera = true;
else if (nav.indexOf("msie") != -1) ie = true;
else if (nav.indexOf("gecko") != -1) nets = true;

if (opera) {
  var ver = navigator.userAgent; ver=ver.toLowerCase();
  var ch_n = ver.substring( ver.indexOf("opera")+5 );
  var end_ver;
  if (  ch_n.indexOf("/") != "-1" ) end_ver=ch_n.substring(1);
  else end_ver=ch_n;
  end_ver = parseInt(end_ver);
}


function get_arrow(pos) {
 var arrow_id = document.getElementById('arrow');
 var link_id = document.getElementById('ddt');
 arrow_id.style.left=400+'px';
 arrow_id.style.top=76+'px';

 if (pos=='start') {
	if (ie) {
	 arrow_id.style.visibility='visible';
	 tn=setInterval("quick_m_start()",25);
	} else arrow_id.style.visibility='visible';

    }  else {
	    if (ie) {tw=setInterval("quick_m_end()",25);}
		else arrow_id.style.visibility='hidden';
	   }

 }

var tn,tw;
var index_start=0;
function quick_m_start() {
  index_start+=1;
	if (index_start < 100) {
	  document.getElementById('arrow').style.filter="alpha(opacity="+index_start+")";
	}
	if (index_start > 100) index_start=100;
}

function quick_m_end() {
  index_start-=1;
	if (index_start < 100) {
	  document.getElementById('arrow').style.filter="alpha(opacity="+index_start+")";
	}
  if (index_start < 0) {index_start=0; document.getElementById('arrow').style.visibility='hidden'}
}