/************************************************************************************************************
	(C) www.dhtmlgoodies.com, October 2005

	This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website.

	Terms of use:
	You are free to use this script as long as the copyright message is kept intact. However, you may not
	redistribute, sell or repost it without our permission.

	Updated:

		March, 14th, 2006 - Create new tabs dynamically
		March, 15th, 2006 - Dynamically delete a tab

	Thank you!

	www.dhtmlgoodies.com
	Alf Magne Kalleland

	************************************************************************************************************/

	var textPadding = 3; // Padding at the left of tab text - bigger value gives you wider tabs
	var strictDocType = true;
	var tabView_maxNumberOfTabs = 6;	// Maximum number of tabs
	var imageLocation = '../central/layout/images/';

	/* Don't change anything below here */
	var tabObj = new Array();
	var activeTabIndex = new Array();
	var MSIE = navigator.userAgent.indexOf('MSIE')>=0?true:false;

	var regExp = new RegExp(".*MSIE ([0-9]\.[0-9]).*","g");
	var navigatorVersion = navigator.userAgent.replace(regExp,'$1');

	var ajaxObjects = new Array();
	var tabView_countTabs = new Array();
	var tabViewHeight = new Array();
	var tabDivCounter = 0;
	var closeImageHeight = 8;	// Pixel height of close buttons
	var closeImageWidth = 8;	// Pixel height of close buttons

	var ajaxURLs = Array(); // array for urls to load via AJAX/PROTOTYPE
	var tabIndexes = Array(); // array for indexes of the tabnames
	var tabDivNames = Array(); // array for indexes of the tabdivs
	var tabImages = Array();
	var currentTabId;

	function setPadding(obj,padding){
		var span = obj.getElementsByTagName('SPAN')[0];
		span.style.paddingLeft = padding + 'px';
		span.style.paddingRight = padding + 'px';
	}

	function showTab(parentId,tabIndex)
	{
		var parentId_div = parentId + "_";
		var tabViewId = currentTabId = 'tabTab' + parentId_div + tabIndex;
		if(!$('tabView' + parentId_div + tabIndex)){
			return;
		}
		if(activeTabIndex[parentId]>=0){
			if(activeTabIndex[parentId]==tabIndex){
				return;
			}

			var obj = $('tabTab'+parentId_div + activeTabIndex[parentId]);

			obj.className='tabInactive';
			var img = obj.getElementsByTagName('IMG')[0];
			if(img.src.indexOf('tab_')==-1)img = obj.getElementsByTagName('IMG')[1];
			img.src = imageLocation+'tab_right_inactive.gif';
			$('tabView' + parentId_div + activeTabIndex[parentId]).style.display='none';

			//set the tabimage to display none;
			if(tabTabImages = tabImages['tabTab' + parentId_div + activeTabIndex[parentId]]){
				showHideTabImages(tabTabImages, false);
			}

		}

		var thisObj = $('tabTab'+ parentId_div +tabIndex);

		thisObj.className='tabActive';
		var img = thisObj.getElementsByTagName('IMG')[0];
		if(img.src.indexOf('tab_')==-1)img = thisObj.getElementsByTagName('IMG')[1];
		img.src = imageLocation+'tab_right_active.gif';

		$('tabView' + parentId_div + tabIndex).style.display='block';

		//set tabimage to display block;
		if(tabTabImages = tabImages[tabViewId]){
			showHideTabImages(tabTabImages, true);
		}

		activeTabIndex[parentId] = tabIndex;

		var parentObj = thisObj.parentNode;
		var aTab = parentObj.getElementsByTagName('DIV')[0];
		countObjects = 0;
		var startPos = 2;
		var previousObjectActive = false;
		while(aTab){
			if(aTab.tagName=='DIV'){
				if(previousObjectActive){
					previousObjectActive = false;
					startPos-=2;
				}
				if(aTab==thisObj){
					startPos-=2;
					previousObjectActive=true;
					setPadding(aTab,textPadding+1);
				}else{
					setPadding(aTab,textPadding);
				}

				aTab.style.left = startPos + 'px';
				countObjects++;
				startPos+=2;
			}
			aTab = aTab.nextSibling;
		}
		if(url = ajaxURLs[tabIndex]['url']){
			var divName = 'tabView' + parentId_div + tabIndexes[ajaxURLs[tabIndex]['divName']];
			tabDivNames[tabIndex] = divName;
			loadDivURL(divName, url+'&currentTab='+tabViewId);
		}
		return;
	}

	function tabClick()
	{
		var idArray = this.id.split('_');
		showTab(this.parentNode.parentNode.id,idArray[idArray.length-1].replace(/[^0-9]/gi,''));
		if(actionDiv = $('actionMenuDiv')){
			actionDiv.innerHTML = '';
		}
	}

	function showHideTabImages(tabTabImages, show){
		for(i=0;i<tabTabImages.length;i++){
			tabImage = tabTabImages[i];
			if(show)
				tabImage.style.display = 'block';
			else
				tabImage.style.display = 'none';
		}
	}

	function rolloverTab()
	{
		if(this.className.indexOf('tabInactive')>=0){
			this.className='inactiveTabOver';
			var img = this.getElementsByTagName('IMG')[0];
			if(img.src.indexOf('tab_')<=0)img = this.getElementsByTagName('IMG')[1];
			img.src = imageLocation+'tab_right_over.gif';
		}

	}
	function rolloutTab()
	{
		if(this.className ==  'inactiveTabOver'){
			this.className='tabInactive';
			var img = this.getElementsByTagName('IMG')[0];
			if(img.src.indexOf('tab_')<=0)img = this.getElementsByTagName('IMG')[1];
			img.src = imageLocation+'tab_right_inactive.gif';
		}

	}

	function hoverTabViewCloseButton()
	{
		this.src = this.src.replace('close.gif','close_over.gif');
	}

	function stopHoverTabViewCloseButton()
	{
		this.src = this.src.replace('close_over.gif','close.gif');
	}

	function initTabs(mainContainerID,tabTitles,activeTab,width,height,closeButtonArray,additionalTab)
	{
		if(!closeButtonArray)closeButtonArray = new Array();

		if(!additionalTab || additionalTab=='undefined'){
			tabObj[mainContainerID] = $(mainContainerID);
			width = width + '';
			if(width.indexOf('%')<0)width= width + 'px';
			tabObj[mainContainerID].style.width = width;

			height = height + '';
			if(height.length>0){
				if(height.indexOf('%')<0)height= height + 'px';
				tabObj[mainContainerID].style.height = height;
			}


			tabViewHeight[mainContainerID] = height;

			var tabDiv = document.createElement('DIV');
			var firstDiv = tabObj[mainContainerID].getElementsByTagName('DIV')[0];

			tabObj[mainContainerID].insertBefore(tabDiv,firstDiv);
			tabDiv.className = 'tabPane';
			tabView_countTabs[mainContainerID] = 0;

		}else{
			var tabDiv = tabObj[mainContainerID].getElementsByTagName('DIV')[0];
			var firstDiv = tabObj[mainContainerID].getElementsByTagName('DIV')[1];
			height = tabViewHeight[mainContainerID];
			activeTab = tabView_countTabs[mainContainerID];


		}



		for(var no=0;no<tabTitles.length;no++){
			var aTab = document.createElement('DIV');
			aTab.id = 'tabTab' + mainContainerID + "_" +  (no + tabView_countTabs[mainContainerID]);

			aTab.onmouseover = rolloverTab;
			aTab.onmouseout = rolloutTab;
			aTab.onclick = tabClick;
			aTab.className='tabInactive';

			var span = document.createElement('SPAN');
			span.innerHTML = tabTitles[no];
			span.style.position = 'relative';

			aTab.appendChild(span);
			tabDiv.appendChild(aTab);

			if(closeButtonArray[no]){
				var closeButton = document.createElement('IMG');
				closeButton.src = imageLocation+'close.gif';
				closeButton.height = closeImageHeight + 'px';
				closeButton.width = closeImageHeight + 'px';
				closeButton.setAttribute('height',closeImageHeight);
				closeButton.setAttribute('width',closeImageHeight);
				closeButton.style.position='absolute';
				closeButton.style.top = '6px';
				closeButton.style.right = '0px';
				closeButton.onmouseover = hoverTabViewCloseButton;
				closeButton.onmouseout = stopHoverTabViewCloseButton;

				span.innerHTML = span.innerHTML + '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';

				var deleteTxt = span.innerHTML+'';

				closeButton.onclick = function(){ deleteTab(this.parentNode.innerHTML) };
				span.appendChild(closeButton);
			}

			var img = document.createElement('IMG');
			img.valign = 'bottom';
			img.src = imageLocation+'tab_right_inactive.gif';
			// IE5.X FIX
			if((navigatorVersion && navigatorVersion<6) || (MSIE && !strictDocType)){

				img.style.position = 'relative';
				alert(document.body.scrollTop);
				img.style.top = '4px';
				span.style.paddingTop = '4px';
				aTab.style.cursor = 'hand';
			}	// End IE5.x FIX
			aTab.appendChild(img);
		}

		var tabs = tabObj[mainContainerID].getElementsByTagName('DIV');
		var divCounter = 0;
		for(var no=0;no<tabs.length;no++){
			if(tabs[no].className=='aTab' && tabs[no].parentNode.id == mainContainerID){
				if(height.length>0)tabs[no].style.height = height;
				tabs[no].style.display='none';
				tabs[no].id = 'tabView' + mainContainerID + "_" + divCounter;
				divCounter++;
			}
		}
		tabView_countTabs[mainContainerID] = tabView_countTabs[mainContainerID] + tabTitles.length;
		showTab(mainContainerID,activeTab);

		return activeTab;
	}

	function showAjaxTabContent(ajaxIndex,parentId,tabId)
	{
		var obj = $('tabView'+parentId + '_' + tabId);
		obj.innerHTML = ajaxObjects[ajaxIndex].response;
	}

	function resetTabIds(parentId)
	{
		var tabTitleCounter = 0;
		var tabContentCounter = 0;


		var divs = tabObj[parentId].getElementsByTagName('DIV');


		for(var no=0;no<divs.length;no++){
			if(divs[no].className=='aTab'){
				divs[no].id = 'tabView' + parentId + '_' + tabTitleCounter;
				tabTitleCounter++;
			}
			if(divs[no].id.indexOf('tabTab')>=0){
				divs[no].id = 'tabTab' + parentId + '_' + tabContentCounter;
				tabContentCounter++;
			}


		}

		tabView_countTabs[parentId] = tabContentCounter;
	}


	function createNewTab(parentId,tabTitle,tabContent,tabContentUrl,closeButton)
	{
		if(tabView_countTabs[parentId]>=tabView_maxNumberOfTabs)return;	// Maximum number of tabs reached - return
		var div = document.createElement('DIV');
		div.className = 'aTab';
		tabObj[parentId].appendChild(div);

		var tabId = initTabs(parentId,Array(tabTitle),0,'','',Array(closeButton),true);
		if(tabContent)div.innerHTML = tabContent;
		if(tabContentUrl){
			var ajaxIndex = ajaxObjects.length;
			ajaxObjects[ajaxIndex] = new sack();
			ajaxObjects[ajaxIndex].requestFile = tabContentUrl;	// Specifying which file to get

			ajaxObjects[ajaxIndex].onCompletion = function(){ showAjaxTabContent(ajaxIndex,parentId,tabId); };	// Specify function that will be executed after file has been found
			ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function

		}

	}

	function getTabIndexByTitle(tabTitle)
	{
		var regExp = new RegExp("(.*?)&nbsp.*$","gi");
		tabTitle = tabTitle.replace(regExp,'$1');
		for(var prop in tabObj){
			var divs = tabObj[prop].getElementsByTagName('DIV');
			for(var no=0;no<divs.length;no++){
				if(divs[no].id.indexOf('tabTab')>=0){
					var span = divs[no].getElementsByTagName('SPAN')[0];
					var regExp2 = new RegExp("(.*?)&nbsp.*$","gi");
					var spanTitle = span.innerHTML.replace(regExp2,'$1');

					if(spanTitle == tabTitle){

						var tmpId = divs[no].id.split('_');
						return Array(prop,tmpId[tmpId.length-1].replace(/[^0-9]/g,'')/1);
					}
				}
			}
		}

		return -1;

	}

	/* Call this function if you want to display some content from external file in one of the tabs
	Arguments: Title of tab and relative path to external file */

	function addAjaxContentToTab(tabTitle,tabContentUrl, index)
	{
		//var index = getTabIndexByTitle(tabTitle);
		if(index!=-1){
			/*var ajaxIndex = ajaxObjects.length;

			tabId = index[1];
			parentId = index[0];


			ajaxObjects[ajaxIndex] = new sack();
			ajaxObjects[ajaxIndex].requestFile = tabContentUrl;	// Specifying which file to get

			ajaxObjects[ajaxIndex].onCompletion = function(){ showAjaxTabContent(ajaxIndex,parentId,tabId); };	// Specify function that will be executed after file has been found
			ajaxObjects[ajaxIndex].runAJAX();		*/// Execute AJAX function
			ajaxURLs[index] 			= Array();
			ajaxURLs[index]['url'] 		= tabContentUrl;
			ajaxURLs[index]['divName']	= tabTitle;
			tabIndexes[tabTitle]		= index;
		}
	}

	function resetTabImages(){
		tabImages = Array();
	}

	function addTabImage(tabViewId, imageSrc, action, alt){
		var image;

		if(!tabImages[tabViewId]){
			tabImages[tabViewId] = Array();
		}
		tabTabImages = tabImages[tabViewId];

		image = document.createElement('IMG');
		image.style.display = 'none';
		image.src = imageSrc;
		image.onclick = function(){
			if(action)
				eval(action);
		}
		image.alt 	= alt;
		image.title = alt;
		tabImages[tabViewId][tabTabImages.length] = image;

		if(tabImages[tabViewId].length>0)
			generateTabImages(tabViewId);
	}

	function generateTabImages(tabViewId){
		var thisObj = $(tabViewId);
		if(tabTabImages = tabImages[tabViewId]){
			var span = thisObj.firstChild;
			var images = $A(span.getElementsByTagName('IMG'));
			images.each(function(image){
					var parent = image.parentNode;
					parent.removeChild(image);
				}
			)

			for(i=0;i<tabTabImages.length;i++){
				tabImage = tabTabImages[i];
				tabImageRight = i*15;
				tabImage.style.display 	= 'block';
				tabImage.style.position = 'absolute';
				tabImage.style.top = 	'20px';
				tabImage.style.left = '-'+tabImageRight+'px';

				tabImageHeight = 15;

				tabImage.height = tabImageHeight + 'px';
				tabImage.width = tabImageHeight + 'px';
				tabImage.setAttribute('height',tabImageHeight);
				tabImage.setAttribute('width',tabImageHeight);

				span.appendChild(tabImage);
			}
		}
	}

	function deleteTab(tabLabel,tabIndex,parentId)
	{

		if(tabLabel){
			var index = getTabIndexByTitle(tabLabel);
			if(index!=-1){
				deleteTab(false,index[1],index[0]);
			}

		}else if(tabIndex>=0){
			if($('tabTab' + parentId + '_' + tabIndex)){
				var obj = $('tabTab' + parentId + '_' + tabIndex);
				var id = obj.parentNode.parentNode.id;
				obj.parentNode.removeChild(obj);
				var obj2 = $('tabView' + parentId + '_' + tabIndex);
				obj2.parentNode.removeChild(obj2);
				resetTabIds(parentId);
				activeTabIndex[parentId]=-1;
				showTab(parentId,'0');
			}
		}





	}