function oGet(name) {
  if (document.getElementById)
    return document.getElementById(name);
  else if (document.all)
    return document.all(name);
  else return null;
  }
var ActiveMenu = null;
var menu = null;
var menu2 = null;
var menu3 = null;
window.onload = init;


function init() {
  menu = oGet('menu');
  if(document.all) {
		sirka = document.body.clientWidth;
		document.getElementById("sub1").style.left = ((sirka-900)/2) + 216;
	}
	else {
		sirka = innerWidth;
		if(window.scrollbars==visible) {
		document.getElementById("sub1").style.left = ((sirka-900)/2) + 208 + 'px';
		}
	else {
	 document.getElementById("sub1").style.left = ((sirka-900)/2) + 236 + 'px';
	 } 
	}
  menu.className = 'sub1';
  
  menu2 = oGet('menu2');
  if(document.all) {
		sirka = document.body.clientWidth;
		document.getElementById("sub2").style.left = ((sirka-900)/2) + 480;
	}
	else {
		sirka = innerWidth;
		if(window.scrollbars==visible) {
		document.getElementById("sub2").style.left = ((sirka-900)/2) + 480 + 'px';
		}
	else {
	 document.getElementById("sub2").style.left = ((sirka-900)/2) + 488 + 'px';
	 } 
	}
  menu2.className = 'sub2';
  
  menu3 = oGet('menu3');
  if(document.all) {
		sirka = document.body.clientWidth;
		document.getElementById("sub3").style.left = ((sirka-900)/2) + 630;
	}
	else {
		sirka = innerWidth;
		if(window.scrollbars==visible) {
		document.getElementById("sub3").style.left = ((sirka-900)/2) + 630 + 'px';
		}
	else {
	 document.getElementById("sub3").style.left = ((sirka-900)/2) + 638 + 'px';
	 } 
	}
  menu3.className = 'sub3';
  }
  
function show(n) {
  nazev = 'sub'+n;  
	
	if(document.all) {
		sirka = document.body.clientWidth;
		document.getElementById(nazev).style.left = ((sirka-900)/2) + 216;
	}
	else {
		sirka = innerWidth;
		document.getElementById(nazev).style.left = ((sirka-900)/2) + 208 + 'px';
	}
	if (menu) menu.className = nazev;
  }

function show2(n) {
  nazev = 'sub'+n;  
	
	if(document.all) {
		sirka = document.body.clientWidth;
		document.getElementById(nazev).style.left = ((sirka-900)/2) + 480;
	}
	else {
		sirka = innerWidth;
		document.getElementById(nazev).style.left = ((sirka-900)/2) + 473 + 'px';
	}
   if (menu2) menu2.className = nazev;
  }

function show3(n) {
  nazev = 'sub'+n;  
	
	if(document.all) {
		sirka = document.body.clientWidth;
		document.getElementById(nazev).style.left = ((sirka-900)/2) + 630;
	}
	else {
		sirka = innerWidth;
		document.getElementById(nazev).style.left = ((sirka-900)/2) + 623 + 'px';
	}
   if (menu3) menu3.className = nazev;
  }

function hide(n) {
  if (menu) menu.className = 'subx';
  }

function hide2(n) {
   if (menu2) menu2.className = 'suby';
  }

function hide3(n) {
   if (menu3) menu3.className = 'subz';
  }