//Used to copy main navigation to botoom nav     
function copyNav() {
	if($('main-nav') && $('bottom-nav')) {
		$('bottom-nav').innerHTML = $('main-nav').innerHTML;
	}
}

//Used to copy content from main conent area to inbetween large nav an small nav on home
// page.
function copyContent() {
    var a = $('mn-home').firstDescendant();
    $(a).style.color = "#0078a9";
    $('mn-customized-tug-quote').insert({ top: $('menu-content').innerHTML });
}

//Function to display the current subnav for the page.
function displayCurrentNav(){
    var liList = $('mainnav').childElements();

    for (var i = 0; i < liList.length; i++) {
        var a = liList[i].firstDescendant();
        if ($(a).hasClassName('current')) {
            var li = $(a).up();
            var ul = $(li).getElementsByTagName('ul');
            $(ul[0]).style.display = "block";
        }
    }  
}


// correctly handle PNG transparency in Win IE 5.5 & 6.
function correctPNG()
{
   var arVersion = navigator.appVersion.split("MSIE")
   var version = parseFloat(arVersion[1])
   if ((version >= 5.5) && (document.body.filters)) 
   {
      for(var i=0; i<document.images.length; i++)
      {
         var img = document.images[i]
         var imgName = img.src.toUpperCase()
         if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
         {
            var imgID = (img.id) ? "id='" + img.id + "' " : ""
            var imgClass = (img.className) ? "class='" + img.className + "' " : ""
            var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
            var imgStyle = "display:inline-block;" + img.style.cssText 
            if (img.align == "left") imgStyle = "float:left;" + imgStyle
            if (img.align == "right") imgStyle = "float:right;" + imgStyle
            if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
            var strNewHTML = "<span " + imgID + imgClass + imgTitle
            + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
            + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
            + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
            img.outerHTML = strNewHTML
            i = i-1
         }
      }
   }    
}
//window.attachEvent("onload", correctPNG);


function checkPrototype(){
    try{
        var version = Prototype.Version;
    }
    catch(err){
        var e = document.createElement("script");
        e.src = "/Javascripts/LightBox2/js/prototype.js";
        e.type="text/javascript";
        document.getElementsByTagName("head")[0].appendChild(e);
    }
    
}


//Delay function
function displayCurrentNavDelay()
{
    setTimeout("displayCurrentNav()", 200);
}