// Меню

var disappeardelay = 500; // menu disappear speed onMouseout (in miliseconds)
var enableanchorlink = 0; // Enable or disable the anchor link when clicked on? (1=e, 0=d)
var hidemenu_onclick = 1; // hide menu when user clicks within menu? (1=yes, 0=no)

var ie5 = document.all;
var ns6 = document.getElementById && !document.all;

function getposOffset(what, offsettype) {
  var totaloffset = offsettype == "left" ? what.offsetLeft : what.offsetTop;
  var parentEl = what.offsetParent;
  while(parentEl != null) {
    totaloffset = offsettype == "left" ? totaloffset + parentEl.offsetLeft : totaloffset + parentEl.offsetTop;
    parentEl = parentEl.offsetParent;
  }
  return totaloffset;
}

function showhide(obj, e, visible, hidden) {
  if(e.type == "click" && obj.visibility == "hidden" || e.type == "mouseover")
    obj.visibility = "visible";
  else if(e.type == "click") obj.visibility = "hidden";
}

function iecompattest() {
  return document.compatMode && document.compatMode != "BackCompat" ?
    document.documentElement : document.body;
}

function clearbrowseredge(obj, whichedge) {
  var edgeoffset = 0;
  if(whichedge == "rightedge") {
    var windowedge = ie5 && !window.opera ?
      iecompattest().scrollLeft + iecompattest().clientWidth - 15 :
      window.pageXOffset + window.innerWidth - 15;
    dropmenuobj.contentmeasure = dropmenuobj.offsetWidth;
    if(windowedge - dropmenuobj.x < dropmenuobj.contentmeasure)
      edgeoffset = dropmenuobj.contentmeasure - obj.offsetWidth;
  } else {
    var topedge = ie5 && !window.opera ? iecompattest().scrollTop : window.pageYOffset;
    var windowedge = ie5 && !window.opera ?
      iecompattest().scrollTop + iecompattest().clientHeight - 15 :
      window.pageYOffset + window.innerHeight - 18;
    dropmenuobj.contentmeasure = dropmenuobj.offsetHeight;
    if(windowedge - dropmenuobj.y < dropmenuobj.contentmeasure) {
      edgeoffset = dropmenuobj.contentmeasure + obj.offsetHeight;
      if((dropmenuobj.y - topedge) < dropmenuobj.contentmeasure)
        edgeoffset = dropmenuobj.y + obj.offsetHeight - topedge;
    }
  }
  return edgeoffset;
}

function dropdownmenu(obj, e, dropmenuID) {
  if(window.event) event.cancelBubble = true;
  else if(e.stopPropagation) e.stopPropagation();
  if(typeof dropmenuobj != "undefined")
    dropmenuobj.style.visibility = "hidden";
  clearhidemenu();
  if(ie5 || ns6) {
    obj.onmouseout = delayhidemenu;
    dropmenuobj = document.getElementById(dropmenuID);
    if(hidemenu_onclick) dropmenuobj.onclick = function() { dropmenuobj.style.visibility = 'hidden'; };
    dropmenuobj.onmouseover = clearhidemenu;
    dropmenuobj.onmouseout = ie5 ? function() { dynamichide(event); } : function(event) { dynamichide(event); };
    dropmenuobj.x = getposOffset(obj, "left");
    dropmenuobj.y = getposOffset(obj, "top");
    dropmenuobj.style.left = dropmenuobj.x - clearbrowseredge(obj, "rightedge") + "px";
    dropmenuobj.style.top = dropmenuobj.y - clearbrowseredge(obj, "bottomedge") + obj.offsetHeight + "px";
    showhide(dropmenuobj.style, e, "visible", "hidden");
  }
  return clickreturnvalue();
}

function clickreturnvalue() {
  if((ie5 || ns6) && !enableanchorlink) return false;
  else return true;
}

function contains_ns6(a, b) {
  while(b.parentNode)
    if((b = b.parentNode) == a) return true;
  return false;
}

function dynamichide(e) {
  if(ie5 && !dropmenuobj.contains(e.toElement)) delayhidemenu();
  else
    if(ns6 && e.currentTarget != e.relatedTarget && !contains_ns6(e.currentTarget, e.relatedTarget))
      delayhidemenu();
}

function delayhidemenu() {
  delayhide = setTimeout("dropmenuobj.style.visibility = 'hidden'", disappeardelay);
}

function clearhidemenu() {
  if(typeof delayhide != "undefined")
    clearTimeout(delayhide);
}