// Entrypage utility functions

// cross-browser event handling for IE5+, NS6+ and Mozilla/Gecko by Scott Andrew
function addEvent(elm, evType, fn, useCapture)
{
	if(elm)
	{
		if(elm.addEventListener)
		{
			elm.addEventListener(evType, fn, useCapture);
			return true;
		}
		else if(elm.attachEvent)
		{
			var r = elm.attachEvent('on' + evType, fn);
			return r;
		}
		else
		{
			elm['on' + evType] = fn;
		}
	}
}

// mouseover image event
function mouseOverImage(thisImg)
{
	ext = thisImg.src.substr(thisImg.src.lastIndexOf('.'));
	path = thisImg.src.match(/(.*)\/(.*\.(png|gif|jpg))/)[1];
	filename = thisImg.src.replace(path, '');
	filenameIndex = filename.lastIndexOf("_");
	basename = filename.substr(0, filenameIndex);
	newFilename = path + basename + "_1" + ext;
	thisImg.src = newFilename;
}

// mouseover image event
function mouseOutImage(thisImg)
{
	ext = thisImg.src.substr(thisImg.src.lastIndexOf('.'));
	path = thisImg.src.match(/(.*)\/(.*\.(png|gif|jpg))/)[1];
	filename = thisImg.src.replace(path, '');
	filenameIndex = filename.lastIndexOf("_");
	basename = filename.substr(0, filenameIndex);
	newFilename = path + basename + "_0" + ext;
	thisImg.src = newFilename;
}		

// not using this function, may rework later - colinc@criticalmass.com
function constructSwapImage()
{
	if (!document.getElementsByTagName) return;
	var theseImages = document.getElementsByTagName("img");
	for(var i=0; i<theseImages.length; i++) {
	var iImage = theseImages[i].id;
	//alert(iImage);
		if(theseImages[i].className=="rollover")
		{
			alert(iImage);
			addEvent(iImage,'mouseover',function(){mouseOverImage(document.getElementById(iImage))},false);
			//addEvent(iImage,'mouseout',function(){mouseOutImage(iImage)},false);
		}
	}
}

// This function is to clear Search box on click
function clearField()
{
	var textVal = document.getElementById("search");
	textVal.value = "";
}

function createRollOvers()
{
	var btnSearch = document.getElementById("btn-search");
	addEvent(btnSearch,'mouseover',function(){mouseOverImage(btnSearch)},false);
	addEvent(btnSearch,'mouseout',function(){mouseOutImage(btnSearch)},false);
	var btnSearchImg = new Image;
	btnSearchImg.src = "/assets/images/btn-search_1.gif";
	
	var btnHome = document.getElementById("gnav-home");
	addEvent(btnHome,'mouseover',function(){mouseOverImage(btnHome)},false);
	addEvent(btnHome,'mouseout',function(){mouseOutImage(btnHome)},false);		
	var btnHomeImg = new Image;
	btnHomeImg.src = "/assets/images/nav_home_1.gif";		
	
	var btnKP = document.getElementById("gnav-kp");
	addEvent(btnKP,'mouseover',function(){mouseOverImage(btnKP)},false);
	addEvent(btnKP,'mouseout',function(){mouseOutImage(btnKP)},false);		
	var btnKPImg = new Image;
	btnKPImg.src = "/assets/images/nav_kp_1.gif";		
	
	var midNav1 = document.getElementById("midnav1");
	addEvent(midNav1,'mouseover',function(){mouseOverImage(midNav1)},false);
	addEvent(midNav1,'mouseout',function(){mouseOutImage(midNav1)},false);
	var midNav2 = document.getElementById("midnav2");
	addEvent(midNav2,'mouseover',function(){mouseOverImage(midNav2)},false);
	addEvent(midNav2,'mouseout',function(){mouseOutImage(midNav2)},false);
	var midNav3 = document.getElementById("midnav3");
	addEvent(midNav3,'mouseover',function(){mouseOverImage(midNav3)},false);
	addEvent(midNav3,'mouseout',function(){mouseOutImage(midNav3)},false);
	var midNav4 = document.getElementById("midnav4");
	addEvent(midNav4,'mouseover',function(){mouseOverImage(midNav4)},false);
	addEvent(midNav4,'mouseout',function(){mouseOutImage(midNav4)},false);
	var midNav5 = document.getElementById("midnav5");
	addEvent(midNav5,'mouseover',function(){mouseOverImage(midNav5)},false);
	addEvent(midNav5,'mouseout',function(){mouseOutImage(midNav5)},false);		
}

function createRollOversWithContent()	
{
	var spotlightHealthWellness = document.getElementById("spotlight-health-wellness");
	addEvent(spotlightHealthWellness,'mouseover',function(){mouseOverImage(spotlightHealthWellness)},false);
	addEvent(spotlightHealthWellness,'mouseout',function(){mouseOutImage(spotlightHealthWellness)},false);
	
	var spotlightHealthManager = document.getElementById("spotlight-health-manager");
	addEvent(spotlightHealthManager,'mouseover',function(){mouseOverImage(spotlightHealthManager)},false);
	addEvent(spotlightHealthManager,'mouseout',function(){mouseOutImage(spotlightHealthManager)},false);
	
	var spotlightHealthPlans = document.getElementById("spotlight-health-plans");
	addEvent(spotlightHealthPlans,'mouseover',function(){mouseOverImage(spotlightHealthPlans)},false);
	addEvent(spotlightHealthPlans,'mouseout',function(){mouseOutImage(spotlightHealthPlans)},false);
	
	var spotlightKpNews = document.getElementById("spotlight-kp-news");
	addEvent(spotlightKpNews,'mouseover',function(){mouseOverImage(spotlightKpNews)},false);
	addEvent(spotlightKpNews,'mouseout',function(){mouseOutImage(spotlightKpNews)},false);	
}

//
// Sign on functions
//
// Insert "members" segment into host portion of URL
function addSegmentToUrl() { 
        var theHost = document.location.host; 
        var myArray = theHost.split(".", 3); 
        
        if (myArray[0] == "www" || myArray[0] == "kaiserpermanente") { 
          var newHost = "members.kaiserpermanente.org"; 
        } else { 
          var newHost = myArray[0] + ".members." + myArray[1] + "." + myArray[2]; 
        } 
        
        return newHost; 
} 

// Build the URL, add path info
function buildUrl(pathInfo) {
	var newUrl = "https://" + addSegmentToUrl() + pathInfo;
	return newUrl;
}

// Function to signon
function submitSignOnForm() {
	var newUrl = buildUrl("http://www.kaiserpermanente.org/kpweb/signon.do");
	document.signon.action = newUrl;
	document.signon.method = "POST";
	document.signon.submit();
}

// Function to signoff
function signOff() {
	var newUrl = buildUrl("http://www.kaiserpermanente.org/kpweb/signoff.do");
	document.location = newUrl;
}

// These are ajax methods
var http = createRequestObject();

function createRequestObject()
{
    var ro;
    if(navigator.appName == "Microsoft Internet Explorer")
    {
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    } 
    else
    {
        ro = new XMLHttpRequest();
    }
    return ro;
}

function handleResponse()
{
	// alert('readyState: ' + http.readyState + ' status: ' + http.status);
    if(http.readyState == 4 && http.status == 200)
    {
       var response = http.responseText;
      // alert('The server says: ' + response); 
       var SignOnDiv = document.getElementById("signon");
       var SignOffDiv = document.getElementById("signoff");
       
       if(response.substring(0, 4)=="true")
       {
       	SignOnDiv.style.display = "none";
       	SignOffDiv.style.display = "block";
       	SignOffDiv.innerHTML="<h2 class=\"h2-signoff\">You're signed on</h2><p class=\"signoff-text\">Manage your health and your health plan at <a href=\"http://www.kaiserpermanente.org/kpweb/toc.do?theme=myhealthmanager_members\">my health manager</a>.</p><div style=\"text-align:center\"><a href=\"javascript:signOff();\" onmouseover=\"swapImg('signOffBtn','http://www.kaiserpermanente.org/kpweb/image/segment/entrypage/btn-sign-off_1.gif')\" onmouseout=\"swapImg('signOffBtn','http://www.kaiserpermanente.org/kpweb/image/segment/entrypage/btn-sign-off_0.gif')\"><img id=\"signOffBtn\" src=\"http://www.kaiserpermanente.org/kpweb/image/segment/entrypage/btn-sign-off_0.gif\" width=\"62\" height=\"18\" alt=\"\" /></a></div><ul style=\"padding-top:45px;\"><li><a href=\"http://info.kp.org/richmedia/consumeria/index.html\" style=\"font-weight:normal 11px Verdana, Arial;\">Site improvements&mdash;take a look!</a></li></ul>";
		setTimeout("location.href='http://www.kaiserpermanente.org/kpweb/timeoutwarning.do?prevPage='+location.href", 1080000);
       }
       else
       {
       	SignOffDiv.style.display = "none";
		SignOnDiv.style.display = "block";
		document.getElementById("userid").focus()
       }        
    }
}

function getStatus()
{
	try {
     http.open('GET', 'http://www.kaiserpermanente.org/kpweb/SignOnSignOffStatus');
     http.onreadystatechange = handleResponse;
     http.send(null);
    }
    catch (e) {
    	alert('Error: ' + e.description);
    }
}

// this function forces http to https mode
function checkForSsl()
{
	if (document.location.protocol == 'https' )
	{
	// do nothing
	}
	else
	{
		location.href = location.href.replace("http:","https:");
	}
}

// Resize the height of the page according to the amount of content on it
function resize() {
	document.getElementById('left').style.height = Math.max(400, document.getElementById('columns').offsetHeight) + "px";
}


// init function to load one, multiple fuctions on page load
function init()
{
	//document.getElementById("signon").style.display = "none";
	addEvent(document.getElementById("search"),"click",clearField,false);
	createRollOvers();	
	createRollOversWithContent();
	resize();
	// NOTE: I commented out the "getStatus" line in entrypage.js'
	// getStatus();
	//checkForSsl();
}

var nav = new NavClass("nav","SegmentNav","skirt","nav-item-" + nav_section);
window.onload = init;