var DDSPEED = 1;
var DDTIMER = 15;

// main function to handle the mouse events //
function ddMenu(id,d){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  clearInterval(c.timer);
  if(d == 1){
    clearTimeout(h.timer);
    if(c.maxh && c.maxh <= c.offsetHeight){return}
    else if(!c.maxh){
      c.style.display = 'block';
      c.style.height = 'auto';
      c.maxh = c.offsetHeight;
      c.style.height = '0px';
    }
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }else{
    h.timer = setTimeout(function(){ddCollapse(c)},50);
  }
}

// collapse the menu //
function ddCollapse(c){
  c.timer = setInterval(function(){ddSlide(c,-1)},DDTIMER);
}

// cancel the collapse if a user rolls over the dropdown //
function cancelHide(id){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  clearTimeout(h.timer);
  clearInterval(c.timer);
  if(c.offsetHeight < c.maxh){
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }
}

// incrementally expand/contract the dropdown and change the opacity //
function ddSlide(c,d){
  var currh = c.offsetHeight;
  var dist;
  if(d == 1){
    dist = (Math.round((c.maxh - currh) / DDSPEED));
  }else{
    dist = (Math.round(currh / DDSPEED));
  }
  if(dist <= 1 && d == 1){
    dist = 1;
  }
  c.style.height = currh + (dist * d) + 'px';
  c.style.opacity = currh / c.maxh;
  c.style.filter = 'alpha(opacity=' + (currh * 100 / c.maxh) + ')';
  if((currh < 2 && d != 1) || (currh > (c.maxh - 2) && d == 1)){
    clearInterval(c.timer);
  }
}

//show or Hide the RollOver image
var rollArray=new Array();
function setRollOver(OverImgSrc,pageImageName)
{
if (! document.images)return;
if (pageImageName == null)
    pageImageName = document.images[document.images.length-1].name;
    rollArray[pageImageName]=new Object;
    rollArray[pageImageName].overImg = new Image;
    rollArray[pageImageName].overImg.src=OverImgSrc;
}

function onOver(pageImageName)
{
if (! document.images)return;
if (! rollArray[pageImageName])return;
if (! rollArray[pageImageName].outImg)
    {
    rollArray[pageImageName].outImg = new Image;
    rollArray[pageImageName].outImg.src = document.images[pageImageName].src;
    }
    document.images[pageImageName].src=rollArray[pageImageName].overImg.src;
        
}

function onOut(pageImageName)
{
if (! document.images)return;
if (! rollArray[pageImageName])return;
document.images[pageImageName].src=rollArray[pageImageName].outImg.src;
}
function fnShowUL(subMenuId)
{
    var browser=navigator.appName;
    var subId = document.getElementById(subMenuId);
    var field = document.getElementById("three-ddcontent");
        
    field.style.width = "375px";
    field.style.height = "225px";
    field.style.overflow = "visible";
     
    subId.style.visibility = "visible";
    subId.style.display = "block";
}

function fnHideUL(subMenuId)
{
    var browser=navigator.appName;
    var subId = document.getElementById(subMenuId);
    var field = document.getElementById("three-ddcontent");

    field.style.width = "400px";
    if(isIE6())
    {
        field.style.overflow = "hidden";
    }
    subId.style.visibility = "hidden";
    subId.style.display = "none";
}

function ssfnShowUL(subMenuId)
{

    var subId = document.getElementById(subMenuId);
    var browser=navigator.appName;
    
    var field = document.getElementById("three-ddcontent");
    field.style.width = "180px";
    
    //if(browser != "Microsoft Internet Explorer" || isIE6())
    //{
        field.style.overflow = "visible";
    //}   
    
    subId.style.visibility = "visible";
    subId.style.display = "block";
}

function ssfnHideUL(subMenuId)
{

    var subId = document.getElementById(subMenuId);
    
    var field = document.getElementById("three-ddcontent");
    field.style.width = "180px";
    
    if(isIE6())
    {
        field.style.overflow = "hidden";
    }
    
    subId.style.visibility = "hidden";
    subId.style.display = "none";
}

function isIE6()
{
    var browser=navigator.appName;
    var IE6 = false;
    if(browser == "Microsoft Internet Explorer")
    {
        var appversion = navigator.appVersion;
        if(appversion.indexOf("MSIE 6") > 0)
            IE6 = true;
    }
    return IE6;
}