/* DOM scripting to force IE6 to perform :hover on <li> tags */
sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("li");
	if (document.getElementById("hideDropDowns")) {
		var dropDownFrame = document.getElementById("hideDropDowns");
	}
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			className = this.className;
			this.className+=" iehover";
			if (dropDownFrame) {
				dropDownFrame.style.visibility = "visible";
			}
			//remove comments for image swapping on top level nav items
			//alert (this.className);
			//switchImage('topnav_' + className,'on');
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" iehover\\b"), "");
			if (dropDownFrame) {			
				dropDownFrame.style.visibility = "hidden";
			}
			//remove comments for image swapping on top level nav items
			//switchImage('topnav_' + this.className,'off');
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);



function toggle_class(ele,cssClass) {
	//console.log('ele=' + ele + ' cssClass=' + cssClass);
	if (ele != '' && cssClass != '') {
		var eleObj = document.getElementById(ele);
		if(eleObj) {
			var myClass = eleObj.className;		
			if(!myClass) {
				eleObj.className = cssClass;
			} else if(myClass != cssClass) {
				eleObj.className = cssClass;
			} else {
				//console.log('Not empty class');
				eleObj.className = '';
			}		
		}
	}
}

/* Return URL parameter utility */
/* Spry is using for Quick Find and for print page functionality */
function gup( name )
{
  	name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  	var regexS = "[\\?&]"+name+"=([^&#]*)";
  	var regex = new RegExp( regexS );
  	var results = regex.exec( window.location.href );
  	if( results == null )
    	return "";
  	else
    	return results[1];
}


/* Text size widget script for resizing text on the page */

function fontSizeChange(newstyle) {
  //active = getActiveStyleSheet();
  switch (newstyle) {
    case 'regular' : 
      setActiveStyleSheet('regular');
      break;
    case 'larger' : 
      setActiveStyleSheet('larger');
      break;
    case 'largest' : 
      setActiveStyleSheet('largest');
      break;
    default :
      setActiveStyleSheet('regular');
      break;
  }
}

function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++)  {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return (c.substring(nameEQ.length,c.length));
  }
  return null;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  //alert(cookie);
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
if (title == 'null') {
  title = getPreferredStyleSheet();
}

setActiveStyleSheet(title);


/* DHTML popovers */
function getOSName()
{
    var OSName="Unknown OS";
    if (navigator.appVersion.indexOf("Win")!=-1) OSName="Windows";
    if (navigator.appVersion.indexOf("Mac")!=-1) OSName="MacOS";
    if (navigator.appVersion.indexOf("X11")!=-1) OSName="UNIX";
    if (navigator.appVersion.indexOf("Linux")!=-1) OSName="Linux";
    return OSName;
}


function showSplash(suffix) 
{
    document.getElementById('overlaySplash' + suffix).style.visibility='visible';
    document.getElementById('overlaySplashinner' + suffix).style.visibility='visible';
	if (document.getElementById('Form' + suffix)) {
		document.getElementById('Form' + suffix).style.visibility='visible';
		document.getElementById('Form' + suffix).style.height=null;		
		document.getElementById('Form' + suffix).style.display='block';
	}
	if (document.getElementById('Response' + suffix)) {
		document.getElementById('Response' + suffix).style.visibility='hidden';
		document.getElementById('Response' + suffix).style.height=0;			
		document.getElementById('Response' + suffix).style.display='none';
	}	
    document.getElementById('overlaySplash' + suffix).style.display='block';
    document.getElementById('overlaySplashinner' + suffix).style.display='block';
}

function hideSplash(suffix) 
{
    document.getElementById('overlaySplash' + suffix).style.visibility='hidden';
    document.getElementById('overlaySplashinner' + suffix).style.visibility='hidden';
	if (document.getElementById('Form' + suffix)) {
		document.getElementById('Form' + suffix).style.visibility='hidden';
		document.getElementById('Form' + suffix).style.height=null;			
		document.getElementById('Form' + suffix).style.display='none';
	}
	if (document.getElementById('Response' + suffix)) {
		document.getElementById('Response' + suffix).style.visibility='hidden';
		document.getElementById('Response' + suffix).style.height=0;		
		document.getElementById('Response' + suffix).style.display='none';
	}	
    document.getElementById('overlaySplash' + suffix).style.display='none';
    document.getElementById('overlaySplashinner' + suffix).style.display='none';
}

/* Rotate callouts in right-hand column, presumes 2 callouts. Also rotates hp get involved. */
	var random_display = 1; // 0 = no, 1 = yes
	
	function generate(x, y) {
	var range = y - x + 1;
	return Math.floor(Math.random() * range) + x;
	}
	
	function getNextCallout(number_of_callout,callout_list) {
	if (random_display) {
	i = generate(0, number_of_callout-1);
		}
		else {
		i = (i+1) % number_of_callout;
	}
	var new_callout = callout_list[i];
	return(new_callout);
	}

	function rotateNextCallout(number,list,id) {
	var new_callout = getNextCallout(number,list);
	document.getElementById(id).innerHTML = new_callout;
	}
	
	function rotateNextCalloutInOrder(place,total,list,id) {
		if (place >= total) {
			var new_callout = list[0];
		} else {
			var new_callout = list[place];
		}
		document.getElementById(id).innerHTML = new_callout;
	}	
	
/* rotate callouts onLoad */	
	function rotateCallout() {
		if (document.getElementById("callout1")) { 
				if (callout1_list.length != 0) {
				document.getElementById("callout1").setAttribute("class","sidebarWidget");
				document.getElementById("callout1").setAttribute("className","sidebarWidget");			
				rotateNextCallout(number_of_callout1,callout1_list,"callout1");
				}
			}
		if (document.getElementById("callout2")) {
				if (callout2_list.length != 0) {
				document.getElementById("callout2").setAttribute("class","sidebarWidget");
				document.getElementById("callout2").setAttribute("className","sidebarWidget");	
				rotateNextCallout(number_of_callout2,callout2_list,"callout2");
				}		
			}
		if (document.getElementById("getInvolved")) {
				if (getInvolved_list.length != 0) {
				document.getElementById("getInvolved").setAttribute("class","clearfix");
				document.getElementById("getInvolved").setAttribute("className","clearfix");
				
				var count = readCookie('getInvolvedCount');
					if (count == null) {
						count=0;
					} else {
						count++;
			   		}
					
					rotateNextCalloutInOrder(count,number_of_getInvolved,getInvolved_list,"getInvolved");
					
					if (count >= number_of_getInvolved) {
						createCookie('getInvolvedCount', 0, 999);					
					} else {
						createCookie('getInvolvedCount', count, 999);
					}
				}		
		}			
	}	

/* Setup spry services to return Quick Find data, check URL first for parameter on load */
var dataFolder = '/data/quickfind/';
var initialLoad = dataFolder + 'initial.xml';
var dsServices = new Spry.Data.XMLDataSet(initialLoad, "/services/service",{useCache:false});
var dsSynonyms = new Spry.Data.NestedXMLDataSet(dsServices, "synonyms/synonym");

var quickFindLook = gup('quickFind');
if (quickFindLook != '') {
	setText(quickFindLook + '.xml');
}

function setText(url){
	var lookupUrl = dataFolder + url;
	dsServices.setURL(lookupUrl);
	dsServices.loadData();
}

/* print page functionality */
/* check for print url param onLoad */
function checkPrint() {  
  var printCheck = gup('print');
	if (printCheck == 1) {	
		setPrintStyleSheet();
	}
	else
	{
		unSetPrintStyleSheet();
	}
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent( function(){ add_print_link( 'nav' ) } );

function add_print_link( id ){
  if( !document.getElementById ||
      !document.getElementById( id ) ) return;

  // add extra functions to page tools list
  var print_page = document.getElementById( id );

  // create print link
  var print_function = document.createElement('p');
  print_function.className = 'print-link';
  print_function.onclick = function(){ print_preview(); return false; };
  print_function.appendChild( document.createTextNode( 'Print the Page' ) );

}

function print_preview() {
	//set the print url param
  	var a;
	a = window.location.href;
	if(a.indexOf("?") != -1) {
		if(a.indexOf("print") == -1) { 
		window.location.href=a + '&print=1';
		}
		else {
		window.location.href=a;	
		}
	}
	else
	{
    	window.location.href=a + '?print=1'
	}
}

function setPrintStyleSheet() {
  var a, b;
  a = document.getElementById("printPreviewStyle");
  b = document.getElementById("printStyle"); 
  a.disabled = false;
  b.disabled = false; 
  add_preview_message();
  window.print();
}

function unSetPrintStyleSheet() {
  var a, b;
  a = document.getElementById("printPreviewStyle");
  b = document.getElementById("printStyle");  
  a.disabled = true;
  b.disabled = true;  
}


function add_preview_message(){
var main_content = document.getElementById('page');
var main_body = main_content.parentNode;

	if (document.getElementById){
		
		var preview_message = document.createElement('div');
		preview_message.id = 'preview-message';
	
		// Create Heading
		var preview_header = document.createElement('h3');
		var preview_header_text = document.createTextNode('This is a print preview of this page');
		preview_header.appendChild(preview_header_text);
		
		// Create paragraph
		var preview_para = document.createElement('p');
		var preview_para_text = document.createTextNode('This box will not appear when you print. ');
		
		var cancel_function_link = document.createElement('a');
			cancel_function_link.onclick = function(){ cancel_print_preview(); return false; };
			cancel_function_link.setAttribute('href', '#');	
		var cancel_function_link_text = document.createTextNode('Return to the existing page.');
		cancel_function_link.appendChild(cancel_function_link_text);
		preview_para.appendChild(preview_para_text); //
		preview_para.appendChild(cancel_function_link);
		
		// Put it all toegether
		preview_message.appendChild(preview_header); 
		preview_message.appendChild(preview_para);
		main_body.insertBefore(preview_message, main_content);

	}
}

function removePrintParam () {
	currentLocation=window.location.href;
	currentLocation=currentLocation.replace(/(&|\?)print=[^&]+/i,"");
	window.location.href = currentLocation;
}


function cancel_print_preview() {
	// Destroy the preview message
	var print_preview = document.getElementById('preview-message');
	var main_body = print_preview.parentNode;
	main_body.removeChild(print_preview);
	
	// Switch back stylesheet
	//setActiveStyleSheet('default');
	unSetPrintStyleSheet();
	removePrintParam();
}


// Survey Cookie 

var noDaysCookieLasts = 999; // number of days the survey cookie should last

function checkSurveyCount() {
	var page = window.location;
	if (page == 'http://inova.beaconfire.us' || page == 'http://inova.beaconfire.us/' || page == 'http://inova.beaconfire.us/index.html') {
		var count = readCookie('surveyCount');
		if (count == null) {
			count=1;
			createCookie('surveyCount', count, noDaysCookieLasts);
		}
		else {
			count++;
			if (count == 2) {
				showSplash('UserSurvey') ;		
			}
			createCookie('surveyCount', count, noDaysCookieLasts);
			// remove below line before going to prod
			//showSplash('UserSurvey') ;		
	   }
	}
}
//trim functions
function trim(stringToTrim) {
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}
function ltrim(stringToTrim) {
	return stringToTrim.replace(/^\s+/,"");
}
function rtrim(stringToTrim) {
	return stringToTrim.replace(/\s+$/,"");
}

//form validation
function emailCheck(sentStr) {
	var at="@";
	var dot=".";
	var str=trim(sentStr);
	var lat=str.indexOf(at);
	var lstr=str.length;
	var ldot=str.indexOf(dot);
	var alertMessage = "The email address " + str + " is invalid.";
	if (str.indexOf(at)==-1){
	   alert(alertMessage);
	   return false;
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert(alertMessage);
	   return false;
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert(alertMessage);
		return false;
	}

	 if (str.indexOf(at,(lat+1))!=-1){
		alert(alertMessage);
		return false;
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert(alertMessage);
		return false;
	 }

	 if (str.indexOf(dot,(lat+2))==-1){
		alert(alertMessage);
		return false;
	 }
	
	 if (str.indexOf(" ")!=-1){
		alert(alertMessage);
		return false;
	 }
	 return true;
}


function getXhttp() {
    var ajax_request;
    if (  window.ActiveXObject  )  {
        var mSoftVersions = [
            'MSXML2.DOMDocument.5.0',
            'MSXML2.DOMDocument.4.0',
            'MSXML2.DOMDocument.3.0',
            'MSXML2.DOMDocument.2.0',
            'MSXML2.DOMDocument',
            'Microsoft.XmlDom',
            'Msxml2.XMLHTTP',
            'Microsoft.XMLHTTP'
        ];
		for (  i=0; i<mSoftVersions.length; i++  )  {
        try {
            ajax_request = new ActiveXObject (  mSoftVersions[i]  );
            }  catch (e)  {}
        }
    }  else if (!ajax_request && typeof XMLHttpRequest != 'undefined')  {
        try {
            ajax_request = new XMLHttpRequest;
        }  catch (e)  {}
    }  else if (!ajax_request && window.createRequest)  {
        try {
            ajax_request = window.createRequest;
        }  catch (e)  {}
    }  else  {
        ajax_request = false;
    }
    return ajax_request;
}

function emailAFriend() {
    var xml = getXhttp();
    if ( !xml )
       return false;
	var url = "/forms/eProc_SendFriend.jsp";
    xml.open('POST', url, true);
    var location = document.getElementById('loc').value;
	var name = document.getElementById('Name').value;
    var from = document.getElementById('From').value;
    var to = document.getElementById('To').value;
    var message = document.getElementById('Message').value;	
	var subject = 'Your friend has recommended a page from Inova.org';
	var docloc = document.getElementById('loc').value;
	if(from==""){
                alert("Please enter your email address.");
				return false;
				} else {
    			var arrSender = from.split(",");
				var arrSenderLen = arrSender.length;
				if (arrSenderLen > 1) {
					alert("Please enter only one sender email address.");
					return false;
				} else {
					arrSender.splice(0,1,trim(arrSender[0]));
					if(emailCheck(from)==false) {
						return false;
					}
				}
	}
	if(to==""){
                alert("Please enter a recipient's email address.");
				return false;
			  } else {
    			var arrRecipients = to.split(",");
				var arrRecipientsLen = arrRecipients.length;		
				for ( var i=0, len=arrRecipientsLen; i<len; ++i ){
					arrRecipients.splice(i,1,trim(arrRecipients[i]));
			 		if(emailCheck(arrRecipients[i])==false) {
						return false;
					}
				}
	}
	if(location==""){
				location = 'http://www.inova.org';				
	}		
	var params = 'loc=' + location + '&Name=' + name + '&From=' + from + '&To=' + to + '&Message=' + message + '&subject=' + subject + '&docLoc=' + docloc;

	xml.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xml.setRequestHeader("Content-length", params.length);
	xml.setRequestHeader("Connection", "close");
	
	xml.onreadystatechange = function() {//Call a function when the state changes.
		if(xml.readyState == 4 && xml.status == 200) {
			var responseMessage = "<h3>Email Sent</h3><br><p>Thank you for your interest.</p><p>An email has been sent to the following " + arrRecipientsLen + " recipient(s) with a link to this page:<br>"; 
			
			for ( var i=0, len=arrRecipientsLen; i<len; ++i ){
				responseMessage += arrRecipients[i] + "<br>";
				}

			responseMessage += "<\/p><div class=\"buttonsResponse\" ><a href=\"javascript:void(0);\" onclick=\"javascript: hideSplash('EmailThisPage'); \">Close</a><\/div>";
		} else if(xml.readyState == 3) {
			var responseMessage = "<h3>Status:</h3><br><p>Recieving data...</p>";
		} else if(xml.readyState == 2) {
			var responseMessage = "<h3>Status:</h3><br><p>Data sent...</p>";
		} else if(xml.readyState == 1) {
			var responseMessage = "<h3>Status:</h3><br><p>Connection successfully opened...</p>";
		} else {
			var responseMessage = "<h3>Error Occured</h3><br><p>There was a problem in sending your email. Please try again or contact the system administrator.</p><div class=\"buttonsResponse\" ><a href=\"javascript:void(0);\" onclick=\"javascript: hideSplash('EmailThisPage'); \">Close</a><\/div>";
		}
		document.getElementById('FormEmailThisPage').style.height=0;
		document.getElementById('FormEmailThisPage').style.display='none'; 				
		document.getElementById('FormEmailThisPage').style.visibility='hidden';
		document.getElementById('ResponseEmailThisPage').style.height=null;
		document.getElementById('ResponseEmailThisPage').style.display='block'; 			
		document.getElementById('ResponseEmailThisPage').style.visibility='visible';
		document.getElementById('ResponseEmailThisPage').innerHTML = responseMessage;
	}
	
	
	xml.send(params);
    //ANYTHING EXTRA IS ADDED HERE.
}

/* onPageLoad, do these */
window.onload = function(e) {
 	//checkPrint();
	rotateCallout();
	checkSurveyCount();
	if (document.getElementById('emailFriend') != null) {
		document.emailFriend.loc.value = window.location;
	}
}