//** Tab Content script- © Dynamic Drive DHTML code library (http://www.dynamicdrive.com)
//** Last updated: Nov 8th, 06

var enabletabpersistence=0 //enable tab persistence via session only cookies, so selected tab is remembered?

////NO NEED TO EDIT BELOW////////////////////////
var tabcontentIDs=new Object()

function expandcontent(linkobj){
var ulid=linkobj.parentNode.parentNode.id //id of UL element
var ullist=document.getElementById(ulid).getElementsByTagName("li") //get list of LIs corresponding to the tab contents
for (var i=0; i<ullist.length; i++){
ullist[i].className=""  //deselect all tabs
if (typeof tabcontentIDs[ulid][i]!="undefined") //if tab content within this array index exists (exception: More tabs than there are tab contents)
document.getElementById(tabcontentIDs[ulid][i]).style.display="none" //hide all tab contents
}
linkobj.parentNode.className="selected"  //highlight currently clicked on tab
document.getElementById(linkobj.getAttribute("rel")).style.display="block" //expand corresponding tab content
saveselectedtabcontentid(ulid, linkobj.getAttribute("rel"))
}

function expandtab(tabcontentid, tabnumber){ //interface for selecting a tab (plus expand corresponding content)
var thetab=document.getElementById(tabcontentid).getElementsByTagName("a")[tabnumber]
if (thetab.getAttribute("rel"))
expandcontent(thetab)
}

function savetabcontentids(ulid, relattribute){// save ids of tab content divs
if (typeof tabcontentIDs[ulid]=="undefined") //if this array doesn't exist yet
tabcontentIDs[ulid]=new Array()
tabcontentIDs[ulid][tabcontentIDs[ulid].length]=relattribute
}

function saveselectedtabcontentid(ulid, selectedtabid){ //set id of clicked on tab as selected tab id & enter into cookie
if (enabletabpersistence==1) //if persistence feature turned on
setCookie(ulid, selectedtabid)
}

function getullistlinkbyId(ulid, tabcontentid){ //returns a tab link based on the ID of the associated tab content
var ullist=document.getElementById(ulid).getElementsByTagName("li")
for (var i=0; i<ullist.length; i++){
if (ullist[i].getElementsByTagName("a")[0].getAttribute("rel")==tabcontentid){
return ullist[i].getElementsByTagName("a")[0]
break
}
}
}

function initializetabcontent()
{
    for (var i=0; i<arguments.length; i++)
    { //loop through passed UL ids
        if (document.getElementById(arguments[i]) != null)
        {
            if (enabletabpersistence==0 && getCookie(arguments[i])!="") //clean up cookie if persist=off
                setCookie(arguments[i], "")
            var clickedontab=getCookie(arguments[i]) //retrieve ID of last clicked on tab from cookie, if any
            var ulobj=document.getElementById(arguments[i])
            var ulist=ulobj.getElementsByTagName("li") //array containing the LI elements within UL
            for (var x=0; x<ulist.length; x++)
            { //loop through each LI element
                var ulistlink=ulist[x].getElementsByTagName("a")[0]
                if (ulistlink.getAttribute("rel"))
                {
                    savetabcontentids(arguments[i], ulistlink.getAttribute("rel")) //save id of each tab content as loop runs
                    ulistlink.onclick=function()
                    {
                        expandcontent(this)
                        return false
                    }
                    if (ulist[x].className=="selected" && clickedontab=="") //if a tab is set to be selected by default
                        expandcontent(ulistlink) //auto load currenly selected tab content
                }
            } //end inner for loop
            if (clickedontab!="")
            { //if a tab has been previously clicked on per the cookie value
                var culistlink=getullistlinkbyId(arguments[i], clickedontab)
                if (typeof culistlink!="undefined") //if match found between tabcontent id and rel attribute value
                expandcontent(culistlink) //auto load currenly selected tab content
                else //else if no match found between tabcontent id and rel attribute value (cookie mis-association)
                expandcontent(ulist[0].getElementsByTagName("a")[0]) //just auto load first tab instead
            }
        }
    } //end outer for loop
}


function getCookie(Name){ 
var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair
if (document.cookie.match(re)) //if cookie found
return document.cookie.match(re)[0].split("=")[1] //return its value
return ""
}

function setCookie(name, value){
document.cookie = name+"="+value //cookie value is domain wide (path=/)
}


// Navigation control for the main-nav highlights
function mainNavHighlight(navId)  
{    
    var mainNavIds = 
    {
        navIds : [  {id:"li-home", className:"", classNameHighlight:"active"},
                    {id:"li-about", className:"", classNameHighlight:"active"},
                    {id:"li-careers", className:"", classNameHighlight:"active"},
                    {id:"li-contact", className:"", classNameHighlight:"active"},
                    {id:"li-pi", className:"patientinfo", classNameHighlight:"patientinfo active"}, 
                    {id:"li-hp", className:"healthcare", classNameHighlight:"healthcare active"},
                    {id:"li-ep", className:"products", classNameHighlight:"products active"}
                 ]
    }

    for (var i=0; i<mainNavIds.navIds.length; i++)
    {
        var navNode = document.getElementById(mainNavIds.navIds[i].id);
        
        if (mainNavIds.navIds[i].id != navId)
        {
            navNode.attributes["class"].nodeValue = mainNavIds.navIds[i].className;
        }
        else
        {
            navNode.attributes["class"].nodeValue = mainNavIds.navIds[i].classNameHighlight;
        }
    }
}

// Initial implementation idea to handle empi product zoom image window
function zoomImagePopUpWin(productName, imgSrc, imgAlt)
{
    var zoomWindow = window.open("", "ZoomWindow", "width=640,height=480,status=yes,resizable=yes");
    var zoomWindowHtml = "<html><head><title>" + productName + "</title></head><body><img src=\"" + imgSrc + "\" alt=\"" + imgAlt + "\"/></body></html>";
    zoomWindow.document.open();
    zoomWindow.document.write(zoomWindowHtml);
    zoomWindow.document.close();
}