// XpertHR.js
// Generic functionality for XpertHR site, starting ...

function ajaxEnabled() {
    var xhrObject = false;

    // Most browsers (including IE7) use the 3 lines below
    if (window.XMLHttpRequest && XMLHttpRequest.prototype) {
        xhrObject = new XMLHttpRequest();
    }
    // Internet Explorer 5/6 will use one of the following  
    else if (window.ActiveXObject) {
        try {
            xhrObject = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (err) {
            try {
                xhrObject = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (err) {
                xhrObject = false;
            }
        }
    }

    if (xhrObject) {
        return true;
    }
    else {
        return false;
    }
}

// Control window size and move to (50,50) from top left
function MoveTopLeftAndTrim(x,y,scroll) 
{
	window.moveTo(50,50);
	
	if(scroll)
	{
	    window.location.hash=window.location.href.match(/#(\w.+)/)[1]; 
	}
}

function popupNoNav(url)
{
	window.open(url, 'NoNavWindow', 'resizable=yes, scrollbars=yes, status=yes');
}

/* Scrolling function for iframe's */
function scrollToTop() 
{
    scroll(0, 0);
}        

// (25/06/2007) GF: Method to get an object given its ID, works cross browser 
function getObjectById(id) {                          
 var obj;                                             
 
 if (document.getElementById)
 {                        
    obj = document.getElementById(id);                  
 }
 else if(document.layers)
 { 
    obj = document.layers[id];
 }
 else
 {                                               
    obj = document.all.item(id);                        
 } 
 
 return obj;                                        
}


// Method to hide an accessible button by ID passed
function hideAccessibleButton(clientID)
{
    var button = getObjectById(clientID);
    if (button) {
        button.style.display = 'none';
    }
}


// switch syle sheets (see http://www.alistapart.com/stories/alternate/)
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;
        }
    }
}

// - 21/8/07 -MG: cookie functions (http://www.quirksmode.org/js/cookies.html)
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 var 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;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}


// Stephan Heitmeyer 05-NOV-2007
// Called from /employmentlaw/legaladviceemails/default.aspx
function ToggleDisplay(idDiv, idImg) {
    eDiv = document.getElementById(idDiv);
    eImg = document.getElementById(idImg);
    if (eDiv!=null && eImg!=null) {
        if (eDiv.style.display=='none') {
            eDiv.style.display = 'block';
            eImg.src = '/App_Themes/default/Images/minus.gif'; 
            eImg.alt = 'collapse';
        } else {
            eDiv.style.display = 'none';
            eImg.src = '/App_Themes/default/Images/plus.gif'; 
            eImg.alt = 'expand';
        }
    }
}
  
  
/***********************************************
* Bookmark site script- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

/* Modified to support Opera */
function bookmarksite(title,url){
if (window.sidebar) // firefox
	window.sidebar.addPanel(title, url, "");
else if(window.opera && window.print){ // opera
	var elem = document.createElement('a');
	elem.setAttribute('href',url);
	elem.setAttribute('title',title);
	elem.setAttribute('rel','sidebar');
	elem.click();
} 
else if(document.all)// ie
	window.external.AddFavorite(url, title);
}



// Stephan Heitmeyer 10-MAR-2008
// Onclick handler for match-highlighted spans created in ArticleUtility.HighlightHtml()
// Status: experimental (currently works in FF2.0, not in IE6 or Opera 9)
function JumpToNeighbourMatch(aEvent, name)
{
	var event = window.event ? window.event : aEvent;
	var forward = !event.altKey;
	var callerElement = event.srcElement ? event.srcElement : event.target;

    // get candidate elements by given name attribute (works for FF)
	var matches = document.getElementsByName(name);
	// work-around for IE and Opera
	if (matches.length==0) {
	    var matches = new Array();
	    var tagMatches = document.getElementsByTagName('span');
	    for (var i=0; i<tagMatches.length; i++ ) {
	        var e = tagMatches[i];
            if (e.attributes["name"])
	            eleName = e.attributes["name"].value;               // Opera requires it spelled out like this
            else
	            eleName = e.name;
    if (eleName == name) matches.push(e);
	    }
	}
	
    // nothing found: return
	if (matches.length==0) return;

    // identify current (clicked) element in list, next and previous
	var i=0;
	while (matches[i] != callerElement && i < matches.length) {
		i++;
	}
	if (forward)
		i++;
	else
		i--;
    // circularity
	if (i<0) i = matches.length-1;
	if (i>=matches.length) i = 0;

	// scroll to and 'select' the new current: next - near bottom, previous - near top of window
	matches[i].scrollIntoView(!forward);
	matches[i].className = "highlightCurrent";

	// reset all the other match classes to "highlight"
	for (j=0; j<matches.length; j++)
		if (j!=i) matches[j].className = "highlight";

    // scroll it 30px away from the edge
    // (That's not going to work ok for FF where scrollIntoView() behaves differently; so leave it)
//	if (forward) 
//	    window.scrollBy(0, 30);
//	else
//	    window.scrollBy(0, -30);
}


// CLIENT-SIDE HIGHLIGHT TOGGLING

// If id identifies an <A> element, then change its href to the specified link.
// This is typically called from a javascript event handler on an element (like onfocus) 
// to apply the javascript implementation of some functionality where javascript is enabled.
function JS_ChangeLink(id, link)
{
    var ele = document.getElementById(id); 
    if (ele!=null && ele.nodeName.toUpperCase()=='A') ele.href = link;
}

function ToggleHiliteStyle(linkId, action)
{
    var callerElement = document.getElementById(linkId); 
    var browser='IE';
    if (callerElement.textContent) browser = 'FF';
    var label = browser=='IE' ? callerElement.innerText : callerElement.textContent;
    // If action does not specify whether On or Off, look at link text to determine
    if (action==0) {
        if (label.toLowerCase().indexOf('highlighting off') >= 0) action = -1;
        if (label.toLowerCase().indexOf('highlighting on') >= 0) action = 1;
    }
    // Delete or insert hilite rule, whatever action specifies, if still 0: probe.
    // Then adapt the link text for the opposite action (2*2*2: on-->off | off-->on, lowercase | uppercase, textContent | innerText)
    var toInsert = false;
    if (action<=0)
        toInsert = !DeleteHiliteRule('.highlight');
                  //================
    if (action==1 || (action==0 && toInsert)) {
        InsertHiliteRule('rbi.css', '.highlight', ' {background-color:#FEE902}');
      //================
        if (callerElement.textContent) {
            callerElement.textContent = callerElement.textContent.replace(/ on/,' off');
            callerElement.textContent = callerElement.textContent.replace(/ On/,' Off');
        } else {
            callerElement.innerText = callerElement.innerText.replace(/ on/,' off');
            callerElement.innerText = callerElement.innerText.replace(/ On/,' Off');
        }
    } else {
        if (callerElement.textContent) {
            callerElement.textContent = callerElement.textContent.replace(/ off/,' on');
            callerElement.textContent = callerElement.textContent.replace(/ Off/,' On');
        } else {
            callerElement.innerText = callerElement.innerText.replace(/ off/,' on');
            callerElement.innerText = callerElement.innerText.replace(/ Off/,' On');
        }
    }
}

function DeleteHiliteRule(classSelector)
{
    var deleted = false;                // highlight rule found and deleted?
    for (var i=0; i < document.styleSheets.length; i++) {
        var ss = document.styleSheets[i];
        var cssRules = (ss.cssRules) ? ss.cssRules : ss.rules;      // browser switch
        var j=0;
        while (j < cssRules.length) {
            if (cssRules[j].selectorText==classSelector) {
                try {
                    ss.deleteRule(j);
                } catch (ex) {
                    ss.removeRule(j);
                }                             
                deleted = true;
            }
            else
                j++;
        }
    }
    return deleted;
}
function InsertHiliteRule(stylesheetName, selector, cssproperty)
{
    // Find the stylesheet to insert into
    var ss = '';
    for (var i=0; i < document.styleSheets.length; i++) {
        if (document.styleSheets[i].href != null && document.styleSheets[i].href.toLowerCase().indexOf(stylesheetName.toLowerCase()) >= 0)
            ss = document.styleSheets[i];
    }
    // Insert the rule
    if (ss!='') 
        try {
            ss.insertRule(selector + cssproperty, 0);   
        } catch (ex) {
            ss.addRule(selector, cssproperty); 
        }
}

// jp-related

function lbxZoomIn(lbxId, nRows, key, prompt) {
    var lbx = document.getElementById(lbxId);
    var nRowsMax = 7;
    lbx.size = nRows;
    if (lbx.options.length < lbx.size) {
        lbx.size = lbx.options.length;
    }
    
    if (lbx.options.length > nRowsMax) {
        var btnApplyId = lbx.parentNode.parentNode.getElementsByTagName("input")[0].id;
        w = window.open('', 'SelectorPopup', 'location=no,menubar=no,toolbar=no,status=no,height=200,width=200,resizable=yes');
        
        w.document.write('<html><head><title>' + key + '</title></head>');
        // generate some js for ok / cancel
        w.document.write('<script>');
        w.document.write('function ResizeToFit() {');
        w.document.write('  var wrp = document.getElementById("wrapper");');
        w.document.write('  var sel = document.getElementById("popupSelector");');
        w.document.write('  var deltaX = window.outerWidth - window.innerWidth;');
        w.document.write('  var deltaY = window.outerHeight - window.innerHeight;');
        w.document.write('  window.resizeTo(sel.clientWidth+deltaX+40, wrp.clientHeight+deltaY+40);');
        w.document.write('}');
        w.document.write('function CancelPopup(btnApplyId) {');
        w.document.write('  var btn = opener.document.getElementById(btnApplyId);');
        w.document.write('  btn.focus();');   // to avoid onfocus of the SELECT firing again when popup closes
        w.document.write('  self.close()');   // now go, silently
        w.document.write('}');
        w.document.write('function CancelIfESC(e, btnApplyId) {');
        w.document.write('  if(e.which==0) CancelPopup(btnApplyId);');
        w.document.write('}');
        w.document.write('function FinalizePopup(btnApplyId, lbxId) {');
        w.document.write('  var btn = opener.document.getElementById(btnApplyId);');
        w.document.write('  var lbx = opener.document.getElementById(lbxId);');
        w.document.write('  var localSelect = document.getElementById("popupSelector");');
        w.document.write('  var nSelections = 0;');
        w.document.write('  for (var j=0; j<localSelect.options.length; j++) {');
        w.document.write('    lbx.options[j].selected = localSelect.options[j].selected;');   // transfer selections to orig page
        w.document.write('    if (localSelect.options[j].selected) nSelections++;');
        w.document.write('  }');
        w.document.write('  if (nSelections > 0) btn.click();');   // submitting the popup is as good as clicking apply
        w.document.write('  btn.focus();');   // to avoid onfocus of the SELECT firing again when popup closes
        w.document.write('  self.close()');   // now go, silently
        w.document.write('}');
        w.document.write('</script>');
        w.document.write('<style type="text/css">.redText { color:#FF0000; }</style>');
        w.document.write('</head>');
        // create the popup content on the fly
        w.document.write('<body style="font-family:Verdana; text-align:center;" onkeypress="CancelIfESC(event, \'' + btnApplyId + '\')" onunload="CancelPopup(\'' + btnApplyId + '\')">');
        w.document.write('<div id="wrapper">');
        w.document.write('<h4 style="text-align:center">' + prompt + '</h4>');
        w.document.write('<div style="font-size: 9px">Ctrl+Click to multi-select</div>');
        w.document.write('<select id="popupSelector" size="' + Math.min(lbx.options.length, 50) + '" multiple="multiple">');
        for (var i=0; i<lbx.options.length; i++)
            w.document.write('<option value="' + lbx.options[i].value + '" class="' + lbx.options[i].className + '" style="font-size: 9px">' + lbx.options[i].text + '</option>');
        w.document.write('</select><br/>');
        w.document.write('<div><button onclick="CancelPopup(\'' + btnApplyId + '\')" style="font-size: 9px">cancel</button>&nbsp;&nbsp;');
        w.document.write('<button onclick="FinalizePopup(\'' + btnApplyId + '\', \'' + lbxId + '\')" style="font-size: 9px">ok</button></div>');
        w.document.write('</div></body><script>ResizeToFit()</script></html>');
    }

}
function lbxZoomOut(lbxId) {
    var lbx = document.getElementById(lbxId);
    lbx.size = 1;
    //updateCsv(id);
}

function lbxSummarizeSelections(lbxId, lblId) {
    var lbx = document.getElementById(lbxId);
    var lbl = document.getElementById(lblId);
    var s='';
    for (var i=0; i<lbx.options.length; i++)
        if (lbx.options[i].selected) {
            if (s=='')
                s = lbx.options[i].text;
            else
                s += ',' + lbx.options[i].text;
        }
    lbl.innerHTML = s;
}

// Specialized implementation of ToggleDisplay
// Toggles the display style between block and none for the DIV given by idDiv and an additional element given by idExtra.
// In parallel toggles the icon image (given as idImg) between minus.gif [collapse] and plus.gif [expand]
function ToggleFilterItemDisplay(idDiv, idExtra, idImg, toggle) {
    eDiv = document.getElementById(idDiv);
    eImg = document.getElementById(idImg);
    eExtra = document.getElementById(idExtra);
    if (eDiv!=null && eImg!=null) {
        if (toggle!='on' && toggle!='off') {
            if (eDiv.style.display=='none') 
                toggle='on';
            else
                toggle='off';
        }
        if (toggle=='on') {
            eDiv.style.display = 'block';
            eExtra.style.display = 'block';
            eImg.src = '/App_Themes/default/Images/minus.gif'; 
            eImg.alt = 'collapse';
        } else {
            eDiv.style.display = 'none';
            eExtra.style.display = 'none';
            eImg.src = '/App_Themes/default/Images/plus.gif'; 
            eImg.alt = 'expand';
        }
    }
}

function TickAll(cblId, csvId) {
    var cblRoot = document.getElementById(cblId);
    var options = cblRoot.getElementsByTagName("input");
    for (var i=0; i < options.length; i++)
        options[i].checked = true;
    cblSummarizeSelections(cblId,csvId);
}
function UntickAll(cblId, csvId) {
    var cblRoot = document.getElementById(cblId);
    var options = cblRoot.getElementsByTagName("input");
    for (var i=0; i < options.length; i++)
        options[i].checked = false;
    cblSummarizeSelections(cblId,csvId);
}
function UntickItem(objItemId) {
    var objItem = document.getElementById(objItemId);
    if(objItem!=null)
    {
        objItem.checked = false;   
    }        
}

function InverseTicks(cblId, csvId) {
    var cblRoot = document.getElementById(cblId);
    var options = cblRoot.getElementsByTagName("input");
    for (var i=0; i < options.length; i++)
        options[i].checked = !options[i].checked;
    cblSummarizeSelections(cblId,csvId);
}


function cblSummarizeSelections(cblId, lblId) {
    var cblRoot = document.getElementById(cblId);
    var options = cblRoot.getElementsByTagName("input");
    var texts = cblRoot.getElementsByTagName("label");
    var lbl = document.getElementById(lblId);
    var s='';
    for (var i=0; i<options.length; i++)
        if (options[i].checked) {
            if (s=='')
                s = texts[i].innerHTML;
            else
                s += '; ' + texts[i].innerHTML;
        }
    if (s=='') s='(unspecified)';
    lbl.innerHTML = s;
    // after any selection changes reflect that new selection is not applied yet
    lbl.className = "greyText smallText";
    var btn = cblRoot.nextSibling.nextSibling.getElementsByTagName("input")[0];   // this is not very robust...
    btn.removeAttribute("disabled");
}

function showXpertHRBlogEntries() {
    var header = ' <div class="infoBox blogBox">' +
		       '<img src="/App_Themes/default/Images/blog_latest.gif" style="border:0;width:170;height:22;" alt="XpertHR Employment Intelligence" title="XpertHR Employment Intelligence" class="marginb5" />' +
		       '<div class="blogBoxInner">';

    var footer = '<div class="blogBoxArrow">&gt;</div>' +
               '    <div class="newsBoxStory">' +
               '        <a href="http://www.xperthr.co.uk/blogs/employment-intelligence">More from the blog</a>' +
               '     </div>' +
        	   '	<br style="clear:both;" />&nbsp;' +
		       ' </div>' +
		       ' <div class="clearfix">' +
		       '     from <a href="http://www.xperthr.co.uk/blogs/employment-intelligence">Employment Intelligence</a>' +
               '</div>' +
	           '</div>';

    var template = '<div class="blogBoxArrow">&gt;</div>' +
			        '<div class="newsBoxStory">' +
			        '    <a href="{HRef}">{Title}</a></div>' +
			        '<br style="clear:both;" />';

    if (ajaxEnabled()) {
        $.ajax({
            type: "POST",
            url: "DataFeeds/XpertHRBlogFeed.asmx/GetBlogData",
            data: "{}",
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function(msg) {
                if (msg != undefined && msg != null) {
                    if (msg.d != undefined && msg.d != null && msg.d.length > 0) {
                        var linksList = '';
                        for (var i = 0; i < msg.d.length; i++) {
                            var link = msg.d[i];
                            var t = template.replace('{HRef}', link.HRef);
                            t = t.replace('{Title}', link.Title);
                            linksList = linksList + t;
                        }
                        header = header + linksList + footer;
                        $('#blogLinks').replaceWith(header);                        
                    }
                }
            },
            error: function(event, bla, t) { }
        });

        // DON'T run the server side code
        return true;
    }

    // run the server side code to generate the blog entries
    return false;
}

/*

Functions to show an Overlay only once so, for example, if the user  
navigates to the page with the overlay using the back button, the over lay is 
never displayed.

Following functions were taken this website except for the showOverlayOnlyOnce
function:

http: //www.comptechdoc.org/independent/web/cgi/javamanual/javacookie.html

*/
function nameDefined(ckie, nme) {
    var splitValues
    var i
    for (i = 0; i < ckie.length; ++i) {
        splitValues = ckie[i].split("=")
        if (splitValues[0] == nme) return true
    }
    return false
}

function delBlanks(strng) {
    var result = ""
    var i
    var chrn
    for (i = 0; i < strng.length; ++i) {
        chrn = strng.charAt(i)
        if (chrn != " ") result += chrn
    }
    return result
}

function getCookieValue(ckie, nme) {
    var splitValues
    var i
    for (i = 0; i < ckie.length; ++i) {
        splitValues = ckie[i].split("=")
        if (splitValues[0] == nme) return splitValues[1]
    }
    return ""
}
function doesCookieExist(cname, cvalue) {  //Tests to see if the cookie 
    var cookie = document.cookie           //with the name and value 
    var chkdCookie = delBlanks(cookie)  //are on the client computer
    var nvpair = chkdCookie.split(";")

    if (nameDefined(nvpair, cname))       //See if the name is in any pair
    {

        tvalue = getCookieValue(nvpair, cname)  //Gets the value of the cookie
        if (tvalue == cvalue) return true
        else return false
    }
    else {

        return false
    }

}

function createCookie(cname, cvalue) {
    var futdate = new Date()		    //Get the current time and date
    var expdate = futdate.getTime()     //Get the milliseconds since Jan 1, 1970
    expdate += 3600 * 1000              //expires in 1 hour(milliseconds)
    futdate.setTime(expdate)
    var newCookie = cname + "=" + cvalue + "; path=/;"	//Set the new cookie values up
    newCookie += " expires=" + futdate.toGMTString()
    window.document.cookie = newCookie //Write the cookie
}