window.onload = initAll;

function initAll() 
{
	initToggleMenu();
	
	// Run slide show for home page banners
	RunSlideShow("homePageBanner","homePageBannerContainer"
		,"images/homeFirstBanner.png;images/homeSecondBanner.jpg;images/bannerRainvent.png", 5);
	
}



/*====== Toggle Drop Down Menu Management  ========================================*/

function initToggleMenu()
{
	var allLinks = document.getElementsByTagName("a");
	
	for (var i=0; i<allLinks.length; i++) 
	{
		if (allLinks[i].className.indexOf("menuLink") > -1) 
		{
			allLinks[i].onclick = retFalse;
			allLinks[i].onmouseover = toggleMenu;
		}
	}
}

function toggleMenu() 
{
	var startMenu = this.href.lastIndexOf("/")+1;
	var stopMenu = this.href.lastIndexOf(".");
	var thisMenuName = this.href.substring(startMenu,stopMenu);


	document.getElementById(thisMenuName).style.display = 'block';
	

	this.parentNode.className = thisMenuName;  
	this.parentNode.onmouseout = toggleDivOff;
	this.parentNode.onmouseover = toggleDivOn;
	
}

function toggleDivOn() 
{
	document.getElementById(this.className).style.display = 'block';
}

function toggleDivOff() 
{
	document.getElementById(this.className).style.display = 'none';
}

function retFalse() 
{
	return true;
}




/* ========= Home Page Slide Show Management =====================================*/


// Browser Slide-Show script. With image cross fade effect for those browsers
// that support it.
// Script copyright (C) 2004-2011 www.cryer.co.uk.
// Script is free to use provided this copyright header is included.

var FadeDurationMS=1000;

function SetOpacity(object,opacityPct)
{
  // IE.
  object.style.filter = 'alpha(opacity=' + opacityPct + ')';
  // Old mozilla and firefox
  object.style.MozOpacity = opacityPct/100;
  // Everything else.
  object.style.opacity = opacityPct/100;
}

function ChangeOpacity(id,msDuration,msStart,fromO,toO)
{
  var element=document.getElementById(id);
  var msNow = (new Date()).getTime();
  var opacity = fromO + (toO - fromO) * (msNow - msStart) / msDuration;
  if (opacity>=100)
  {
    SetOpacity(element,100);
    element.timer = undefined;
  }
  else if (opacity<=0)
  {
    SetOpacity(element,0);
    element.timer = undefined;
  }
  else 
  {
    SetOpacity(element,opacity);
    element.timer = window.setTimeout("ChangeOpacity('" + id + "'," + msDuration + "," + msStart + "," + fromO + "," + toO + ")",10);
  }
}
function FadeInImage(foregroundID,newImage,backgroundID)
{
  var foreground=document.getElementById(foregroundID);
  if (foreground.timer) window.clearTimeout(foreground.timer);
  if (backgroundID)
  {
    var background=document.getElementById(backgroundID);
    if (background)
    {
      if (background.src)
      {
        foreground.src = background.src; 
        SetOpacity(foreground,100);
      }
      background.src = newImage;
      background.style.backgroundImage = 'url(' + newImage + ')';
      background.style.backgroundRepeat = 'no-repeat';
      var startMS = (new Date()).getTime();
      foreground.timer = window.setTimeout("ChangeOpacity('" + foregroundID + "'," + FadeDurationMS + "," + startMS + ",100,0)",10);
    }
  } else {
    foreground.src = newImage;
  }
}
var slideCache = new Array();
function RunSlideShow(pictureID,backgroundID,imageFiles,displaySecs)
{
  var imageSeparator = imageFiles.indexOf(";");
  var nextImage = imageFiles.substring(0,imageSeparator);
  if (slideCache[nextImage] && slideCache[nextImage].loaded)
  {
    FadeInImage(pictureID,nextImage,backgroundID);
    var futureImages = imageFiles.substring(imageSeparator+1,imageFiles.length)
      + ';' + nextImage;
    setTimeout("RunSlideShow('"+pictureID+"','"+backgroundID+"','"+futureImages+"',"+displaySecs+")",
      displaySecs*1000);
    // Identify the next image to cache.
    imageSeparator = futureImages.indexOf(";");
    nextImage = futureImages.substring(0,imageSeparator);
  } else {
    setTimeout("RunSlideShow('"+pictureID+"','"+backgroundID+"','"+imageFiles+"',"+displaySecs+")",
      250);
  }
  // Cache the next image to improve performance.
  if (slideCache[nextImage] == null)
  {
    slideCache[nextImage] = new Image;
    slideCache[nextImage].loaded = false;
    slideCache[nextImage].onload = function(){this.loaded=true};
    slideCache[nextImage].src = nextImage;
  }
}