function changer(elem1,elem2){
chl_elem=elem1+'_a';
switch (elem1){
	case 'td_1': {
	if (document.getElementById('nav_ch1').style.display != 'block') {
	rechanger();
	document.getElementById(elem1).style.background = 'url(main/menu/biz_g.jpg) no-repeat'; 
	document.getElementById('td_1_b').style.background = 'url(main/menu/gr_bl1.png) no-repeat';
	document.getElementById(elem2).style.background = '#2100A9 url(main/menu/gr_bl2.png) no-repeat';
	document.getElementById(chl_elem).style.color = '#07810B';
	document.getElementById('nav_cont').style.visibility = 'visible';
	document.getElementById('nav_ch1').style.display = 'block';
	slideIn();
	val='nav_ch1';}
	else {slideOut();}}
	break;
	case 'td_2': {
	if (document.getElementById('nav_ch2').style.display != 'block') {
	rechanger();
	document.getElementById('td_1_b').style.background = '#2100A9';
	document.getElementById(elem1).style.background = 'url(main/menu/biz_gb.jpg) no-repeat';
	document.getElementById('td_2_b').style.background = 'url(main/menu/gr_bl1.png) no-repeat';
	document.getElementById(elem2).style.background = '#2100A9 url(main/menu/gr_bl2.png) no-repeat';
	document.getElementById(chl_elem).style.color = '#07810B';
	document.getElementById('nav_cont').style.visibility = 'visible';
	document.getElementById('nav_ch2').style.display = 'block';
	slideIn();
	val='nav_ch2';} 
	else {slideOut();}}
	break;
	case 'td_3': {
	if (document.getElementById('nav_ch3').style.display != 'block') {
	rechanger();
	document.getElementById('td_2_b').style.background = '#2100A9';
	document.getElementById(elem1).style.background = 'url(main/menu/biz_gb.jpg) no-repeat'; 
	document.getElementById('td_3_b').style.background = 'url(main/menu/gr_bl1.png) no-repeat';
	document.getElementById(elem2).style.background = '#2100A9 url(main/menu/gr_bl2.png) no-repeat';
	document.getElementById(chl_elem).style.color = '#07810B';
	document.getElementById('nav_cont').style.visibility = 'visible';
	document.getElementById('nav_ch3').style.display = 'block';
	slideIn();
	val='nav_ch3';} 
	else {slideOut();}}
	break;
	case 'td_4': { 
	if (document.getElementById('nav_ch4').style.display != 'block') {
	rechanger();
	document.getElementById('td_3_b').style.background = '#2100A9';
	document.getElementById(elem1).style.background = 'url(main/menu/biz_gb.jpg) no-repeat';
	document.getElementById(elem2).style.background = '#2100A9 url(main/menu/gr_bl3.png) no-repeat';
	document.getElementById(chl_elem).style.color = '#07810B';
	document.getElementById('nav_cont').style.visibility = 'visible';
	document.getElementById('nav_ch4').style.display = 'block';
	slideIn();
	val='nav_ch4';}
	else {slideOut();}}
	break;
	}
}
function rechanger(){
switch (val){
	case 'nav_ch1': {
	document.getElementById('td_1').style.background = '#2100A9 url(main/menu/wh_bl.png) no-repeat';
	document.getElementById('td_1_a').style.color = '#FFF';
	document.getElementById('td_2').style.background = '#2100A9';
	document.getElementById('td_1_b').style.background = '#2100A9 url(main/menu/dot.gif) no-repeat';
	document.getElementById('td_1_b').style.backgroundPosition = '0% center';
	document.getElementById('nav_ch1').style.display = 'none';	}
	break;
	case 'nav_ch2': {
	document.getElementById('td_2').style.background = '#2100A9'; 
	document.getElementById('td_2_a').style.color = '#FFF'; 
	document.getElementById('td_3').style.background = '#2100A9';
	document.getElementById('td_1_b').style.background = '#2100A9 url(main/menu/dot.gif) no-repeat';
	document.getElementById('td_1_b').style.backgroundPosition = '0% center';
	document.getElementById('td_2_b').style.background = '#2100A9 url(main/menu/dot.gif) no-repeat';
	document.getElementById('td_2_b').style.backgroundPosition = '0% center';
	document.getElementById('nav_ch2').style.display = 'none';} 
	break;
	case 'nav_ch3': {
	document.getElementById('td_3').style.background = '#2100A9'; 
	document.getElementById('td_3_a').style.color = '#FFF'; 
	document.getElementById('td_4').style.background = '#2100A9';
	document.getElementById('td_2_b').style.background = '#2100A9 url(main/menu/dot.gif) no-repeat';
	document.getElementById('td_2_b').style.backgroundPosition = '0% center';
	document.getElementById('td_3_b').style.background = '#2100A9 url(main/menu/dot.gif) no-repeat';
	document.getElementById('td_3_b').style.backgroundPosition = '0% center';
	document.getElementById('nav_ch3').style.display = 'none';} 
	break;
	case 'nav_ch4': { 
	document.getElementById('td_4').style.background = '#2100A9';
	document.getElementById('td_4_a').style.color = '#FFF';
	document.getElementById('td_3_b').style.background = '#2100A9 url(main/menu/dot.gif) no-repeat';
	document.getElementById('td_3_b').style.backgroundPosition = '0% center';
	document.getElementById('td_5').style.background = '#2100A9';
	document.getElementById('nav_ch4').style.display = 'none';}
	break;
 }
}
var s = new Array(-33,0);
var t = 0;	
function slideIn() {
	s[0] +=3;
		document.getElementById('nav_cont').style.marginTop = s[0]+'px';
		document.getElementById('blocker').style.height = -1*s[0]+3+'px';
	t = setTimeout("slideIn()",1);
	if (s[0]>-3) {clearTimeout(t);s[0]=-3; }
}
	
function slideOut() {
	s[1] -=3;
		document.getElementById('nav_cont').style.marginTop = s[1]+'px';
		document.getElementById('blocker').style.height = -1*s[1]+3+'px';
	t = setTimeout("slideOut()",1);
	if (s[1]<-32) {clearTimeout(t); s[1]=3; s[0]=-33; rechanger();
	document.getElementById('nav_cont').style.visibility = 'hidden';
		}
}

function show_popup(id) {
	document.getElementById(id).style.visibility= "visible";
}
function hide_popup(id) {
	document.getElementById(id).style.visibility="hidden"
}
function checkradio(e1,e2){
	if (document.getElementById(e1)){
		if (document.getElementById(e1).checked){
			document.getElementById('f2').style.visibility= "hidden";
			show_popup('f1');
		} else {document.getElementById('f1').style.visibility= "hidden"; show_popup('f2');}
	}else {show_popup('f3');}
}
function check_task(id) {
	if (document.getElementById(id).checked){tk='NO_LETTER';}
}
function highlight(e1,e2,e3) {
	document.getElementById(e1).className="td_wh";
	document.getElementById(e2).className="m_but";
	document.getElementById(e3).className="td_wh";	
}
function selectItem(e1,e2) {
	s[0]=-3;
	changer(e1,e2);
	document.getElementById('blocker').style.height = '3px';
	document.getElementById('nav_cont').style.marginTop = '0px';
}
function snowsearch(id) {
	if (document.getElementById(id).innerHTML!=''){
	if (document.getElementById(id).style.display == 'block') document.getElementById(id).style.display = 'none'; 
	else document.getElementById(id).style.display = 'block';
	}
}
function show_Rpopup(ev,id) {
	MouseX = defPosition(ev).x;
	
	obj = document.getElementById(id);
	
	obj.style.left = (MouseX-533)+'px';
	obj.style.visibility = "visible";
}
function iPopup(event) {
	if (document.getElementById('popup_main').innerHTML=='') {document.getElementById('popup_main').innerHTML=document.getElementById('iText').innerHTML;}
	var x = y = 0;
	document.getElementById('popup').style.top = defPosition(event).y + 10 + 'px';
	document.getElementById('popup').style.left = defPosition(event).x + 'px';
	document.getElementById('popup').style.visibility = "visible";
}
function defPosition(event) {
      var x = y = 0;
      if (document.attachEvent != null) {
            x = window.event.clientX + document.documentElement.scrollLeft + document.body.scrollLeft;
            y = window.event.clientY + document.documentElement.scrollTop + document.body.scrollTop;
      }
      if (!document.attachEvent && document.addEventListener) {
            x = event.clientX + window.scrollX;
            y = event.clientY + window.scrollY;
      }
      return {x:x, y:y};
}
function show_podskaz(ev,id) {
	obj = document.getElementById(id);
	obj.style.top = defPosition(ev).y+10+'px';
	obj.style.visibility = "visible";
}