var MGHTools={	
	init: function(){		
		this.rollOver();	
		this.openCloseLinks();
		this.printPage();						
		if( $E('.sN') ){
			this.setSubNavHover();
		}				
		if( $E('.wSubs') ){
			$$('.tN').hoverIntent({
				over: this.mainNavOn, 
				out: this.mainNavOff
			});
		}				
		if( $E('.noSubs') ){
			this.setMainNavHover();
		}				
		if( $E('.tabNav') ){
			this.tabNavigation();
		}
		/* BEGIN awb9 9.16.2008 added for DL Paging Feature */
		if( $E('.pgnTop') ){
			this.pageNavigation();
		}
		/* END awb9 9.16.2008 added for DL Paging Feature */
		/* BEGIN awb9 9.16.2008 added for DL AZ Feature */
		if( $E('.a2zNav') ){
			this.azNavigation();
		}
		/* END awb9 9.16.2008 added for DL AZ Feature */
		if( $E('.toTop') ){
			this.pageScroll();
		}
		if ( $E('.recNLink') ) {
			this.setRecedingNav();
		}		
		/*tool tips rollover functionality disabled
		if ( $E('.toolTip') ) {
			this.toolTips();
		}*/ 
		if ($E('.pageTools')){
			/*
			this.txtCookieCheck();			
			this.textSize();*/
			/* awb9 12.8.2008 this.bookMarkThis(); */
			/*any link that calls an overlay needs to be added to the LightBox.Add object parameters below. 
			Example: { LinkId: 'toolEmail', LightBoxId: 'LightBoxTest }  LinkId: is the id of the <a> tag, LightBoxId: is the id of the light box window
			The links below call the same light box, to call seperate light boxes for each, give each LightBoxId: an individual name.
			The light box window should be contained inside the html page that's calling it, at the bottom of the page before the </body> tag.
			*/
			/*
			LightBox.Add([
				{	
					LinkId: 'toolEmail',	 
					LightBoxId: 'LightBoxTest'			
				},				
				{
					LinkId: 'toolShare',
					LightBoxId: 'LightBoxShareThisPage'
				}
			]);
			LightBox.formHints();	
			*/		
		}				
	},
	setRecedingNav: function(){
		var recNav = $E('.dropNav');
		recNav.hide();
		var slideNav = new Fx.Slide(recNav, {
			onComplete: function(){
				if( this.closeMe ){
					this.slideOut();
					recLk.removeClass('recNOn');	
				}					
				if( this.openMe ){
					this.slideIn();
				}
				this.closeMe = false;
				this.openMe = false;
			}
		});
		slideNav.slideOut();
		var recLk = $E('.recNLink').addEvents({
			'mouseenter': function(){				
				if( slideNav.timer ){
					slideNav.openMe = true;
					slideNav.closeMe = false;
				} else {
					slideNav.openMe = false;
					this.addClass('recNOn');
					recNav.show();
					slideNav.slideIn();
				}
			},
			'mouseleave': function(){
				if( slideNav.timer ){
					slideNav.closeMe = true;
					slideNav.openMe = false;
				} else {
					slideNav.closeMe = false;
					this.removeClass('recNOn');	
					slideNav.slideOut();
				}
			}
		});		
	},		
	mainNavOn: function(){
		this.addClass('hover');									
	},			
	mainNavOff: function(){
		this.removeClass('hover');	
	},
	setMainNavHover: function() {
		$$('.tN').addEvents({
			'mouseenter': function(){						
				this.addClass('hover');		
			},				
			'mouseleave': function(){	
				this.removeClass('hover');								
			}	
		});
	},	
	setSubNavHover: function() {
		$$('.sN').addEvents({
			'mouseenter': function(){						
				this.addClass('active');		
			},				
			'mouseleave': function(){	
				this.removeClass('active');								
			}	
		});
	},	
	// any image with the class name "rollOver" will have an image roll over. There must be a roll over image with the same name 
	// plus the additional "_over" at the end of the image name. Example button.gif and button_over.gif	
	rollOver: function(){
		var oPreLoad = new Array();
		var oTempSrc;
		var imageEles = $$('.rollOver');
		imageEles.each(function(image, index){
			var srcName = image.getProperty('src');
			var xSrc = srcName.substring(0, srcName.indexOf('.gif'));					
			var newSrc = xSrc + '_over.gif';
			image.setProperty('newSrc', newSrc);
			
			// preload 'on' state images
			oPreLoad[index] = new Image();
			oPreLoad[index].src = newSrc;
	
			image.addEvents({
				'mouseover': function(){
					oTempSrc = this.getProperty('src');
					this.setProperty('src', this.getProperty('newSrc'));
				},
				'mouseout': function(){
					if (!oTempSrc) oTempSrc = this.getAttribute('src').replace(/_over/i,'');
					this.setProperty('src', oTempSrc);
				}							
			});
		});
	},		
	tabNavigation: function(){
		var allTabs = $$('.tabNav li');
		var infoDivs = $$('.tabInfo');					
		var currTab = $E('.tabNav .active');
		var currHref = currTab.getElement('a').getProperty('href');
		var tabIndex = currHref.substring(currHref.indexOf('tab')+ 3) -1 ;
		var currTabContent = infoDivs[tabIndex];

		// hide all divs EXCEPT the one specified in tabIndex - displayed by default.
		infoDivs.each(function(div){
			if(div != currTabContent){					
				div.hide();
			}
		});
		/* 
			When the tab <li> is clicked, add the class 'active', and remove active class from current tab.
			Get the href value of the link inside the <li>.
			Extract the id value from the href and display the corresponding tabInfo <div> with the same id.
			The href value of the tab link MUST equal the id of its corresponding content <div>.
			Hide all other tabInfo divs.
		*/
		allTabs.each(function(ele){				
			ele.addEvent('click', function(evt){
				new Event(evt).stop();
				if(currTab != this){
					currTab.removeClass('active');
				}
				var href = this.getElement('a').getProperty('href');
				var divID = href.substring(href.indexOf('#')+1);
				
						
				
				try
				{
					var pageID = divID + "_page1";
				    var pageResultsID = pageID + "_results";
				    	
				    $(pageID).show();
				    $(pageResultsID).show();
				}
				catch(e)
				{}
				
				
				if(currTabContent != $(divID)){
					currTabContent.hide();
				}
					
				this.addClass('active');
				$(divID).show();	
				currTab = this;
				currTabContent = $(divID);
				
				/* if there is paging results, go back to hide correct pages on tab change */
				if( $E('.pgnTop') )
				{
				    var resultDivs = $$('.resultPageNumbers');
			        // hide all divs EXCEPT the one specified in tabIndex - displayed by default.
	                resultDivs.each(function(div){
	                    //if(div.id != "tab1_page1_results"){	
		                if(div.id != divID + "_page1_results"){					
			                div.hide();
		                }
                    });
		        }

			});
		});					
	},
	/* BEGIN awb9 9.16.2008 added for DL Paging Feature */
		pageNavigation: function(){
		try
		{
		var allTabs = $$('.pgnTop li');
		var infoDivs = $$('.pageInfo');
		var resultDivs = $$('.resultPageNumbers');
		/*Note ... had to change this class .resultPageNumbers for paging formatting*/					
		var currTab = $E('.pgnTop .active');
		var currHref = currTab.getElement('a').getProperty('href');
		//alert(currHref);
		var tabIndex = currHref.substring(currHref.indexOf('page')+ 4) -1 ;	
		var currTabContent = infoDivs[tabIndex];
		
		// hide all divs EXCEPT the one specified in tabIndex - displayed by default.
		infoDivs.each(function(div){
			if(div != currTabContent){					
				div.hide();
			}
		});
		
		// hide all divs EXCEPT the one specified in tabIndex - displayed by default.
	    resultDivs.each(function(div){
		    if(div.id != "tab1_page1_results"){					
			    div.hide();
		    }
        });
		/* 
			When the tab <li> is clicked, add the class 'active', and remove active class from current page.
			Get the href value of the link inside the <li>.
			Extract the id value from the href and display the corresponding pageInfo <div> with the same id.
			The href value of the tab link MUST equal the id of its corresponding content <div>.
			Hide all other pageInfo divs.
		*/
		allTabs.each(function(ele){				
			ele.addEvent('click', function(evt){
				new Event(evt).stop();
				if(currTab != this){
					currTab.removeClass('active');
					currTab.removeClass('current');
				}
				var href = this.getElement('a').getProperty('href');
				var divID = href.substring(href.indexOf('#')+1);
				var divResultsID = divID + "_results";
				//alert(divResultsID);	
				
				if(currTabContent != $(divID)){
					currTabContent.hide();
				}
				
				infoDivs.each(function(div){
			            div.hide();
                });
				
				resultDivs.each(function(div){
			            div.hide();
                });
					
				this.addClass('active');
				this.addClass('current');
				$(divID).show();
				$(divResultsID).show();		
				currTab = this;
				currTabContent = $(divID);

			});
		});	
						}
				catch(e)
				{}			
	},
	/* END awb9 9.16.2008 added for DL Paging Feature */
	
		/* BEGIN awb9 9.16.2008 added for DL AZ Paging Feature */
		azNavigation: function(){
		try
		{
		var allTabs = $$('.a2zNav li');
		var infoDivs = $$('.azInfo');	
		var resultDivs = $$('.resultNumber');			
		var currTab = $E('.a2zNav .active');
		var currHref = currTab.getElement('a').getProperty('href');
		var tabIndex = currHref.substring(currHref.indexOf('page')+ 5) - 1;
    	var currTabContent = infoDivs[tabIndex];
    	
	    // hide all divs EXCEPT the one specified in tabIndex - displayed by default.
	    infoDivs.each(function(div){
		    if(div != currTabContent && tabIndex != 0){					
			    div.hide();
		    }
        });
        
        // hide all divs EXCEPT the one specified in tabIndex - displayed by default.
	    resultDivs.each(function(div){
		    if(div.id != "pages1_results"){					
			    div.hide();
		    }
        });

		/* 
			When the tab <li> is clicked, add the class 'active', and remove active class from current page.
			Get the href value of the link inside the <li>.
			Extract the id value from the href and display the corresponding pageInfo <div> with the same id.
			The href value of the tab link MUST equal the id of its corresponding content <div>.
			Hide all other pageInfo divs.
		*/
		allTabs.each(function(ele){				
			ele.addEvent('click', function(evt){
				new Event(evt).stop();
				if(currTab != this){
					currTab.removeClass('active');
				}
				var href = this.getElement('a').getProperty('href');
				
				var divID = href.substring(href.indexOf('#')+1);
				var divResultsID = divID + "_results";
				
				infoDivs.each(function(div){
				    if (href == "#pages1"){
				        infoDivs.each(function(div){
				            div.show();
		                });
		            }
		            else
		            {
		               div.hide();             
				    }
                });
                
                resultDivs.each(function(div){
				    if (href == "#pages1" && div.id == "pages1_results"){
			            div.show();
		            }
		            else
		            {
		               div.hide();             
				    }
                });
					
				this.addClass('active');
				$(divID).show();
				$(divResultsID).show();	
				currTab = this;
				currTabContent = $(divID);
			});
		});	
								}
				catch(e)
				{}					
	},
	/* END awb9 9.16.2008 added for DL AZ Paging Feature */		
	pageScroll: function(){
		var scroll = new Fx.Scroll(window, {
			duration: 1000,
			transition: Fx.Transitions.Quad.easeInOut
		});
		$$('.toTop').each(function(el){				
			el.addEvent('click', function(event){
				event = new Event(event).stop();
				scroll.toTop();
			});
		});
	},
	toolTips: function(){
		var tipArrow = new Element('div', {			
			'class': 'tipArrow'			
		});
		var myTips = new Tips($$('.toolTip'), {
	        maxTitleChars: 50,
			offsets: {'x': -27, 'y': -30},
			fixed: true,
	    	initialize:function(){
			this.fx = new Fx.Style(this.toolTip, 'opacity', {duration: 200, wait: false}).set(0);
			},
			onShow: function(toolTip) {
				this.fx.start(1);
				var tipBox = $E('.tool-tip');
				if(tipBox){
					tipArrow.inject(tipBox);
				}
			},
			onHide: function(toolTip) {
				this.fx.start(0);
			}
		});				
	},	
	createTextStyle: function( ss ){
	 	largeStyle = new Element('link', {
			'href': '../assets/css/font_'+ ss +'.css',
			'rel': 'stylesheet',
			'media': 'screen',
			'type': 'text/css'
		});				
		largeStyle.inject($E('head'));		
	},		
	txtCookieCheck: function(){
		if(Cookie.get('textSize') != null){
			var textLink = $('toolText');		
			var size = Cookie.get('textSize');
			MGHTools.createTextStyle(size);

			if(Cookie.get('textSize') == 'large'){			
				textLink.setText('Smaller Text');
				textLink.setProperty('rel','default');
			} else {
				textLink.setText('Larger Text');
				textLink.setProperty('rel','large');								
			}
	
		} else {
			Cookie.set('textSize', 'default', {path: '/'});				
			MGHTools.createTextStyle('default');
		}		
	},
	textSize: function(){
		$('toolText').addEvent('click', function(){
			var size = this.getProperty('rel');

			Cookie.set('textSize', size, {path: '/'});				
			MGHTools.createTextStyle(size);

			if( document.all ) { 
				window.location.reload();
			} else {
				location = document.URL;
			}
			return false;	
		});
	},	
	printPage: function(){
		if($('toolPrint')){
			$('toolPrint').addEvent('click', function(){
				window.print();
				return false;
			});
		}		
	},	
	closeLink: function(){	
		this.hide();
	},
	openLink: function(){	
		this.show();
	},	
	openCloseLinks: function(){	
		if($E('.openLink')){	
			var ol = $E('.openLink');
			var th = $E('.toggleHide');
			var cl = $E('.closeLink');
			boundOpenLink = MGHTools.openLink.bind(th);
			ol.addEvent('click', boundOpenLink );
			boundCloseLink = MGHTools.closeLink.bind(th);
			cl.addEvent('click', boundCloseLink );		
		}
	},
	bookMarkThis: function(){	
		var urlAddress = location.href; 		
		var pageTitle = document.title; 
		$('toolBmark').addEvent('click', function(){
			 if (window.sidebar){ 
				window.sidebar.addPanel(pageTitle,urlAddress,"");
			} else if (window.external) { 
				window.external.AddFavorite(urlAddress,pageTitle);
			}
			else {
				return;
			}
			return false;		
		});		
	}			
}

Element.extend({
	show : function() {
		this.removeClass('hidden');
	},					
	hide : function() {
		this.addClass('hidden');
	},
	isHidden: function() {
		return this.hasClass('hidden');
	},

	hoverIntent: function(f,g) {
		// default configuration options
		var cfg = {
			sensitivity: 7,
			interval: 100,
			timeout: 0
		};
		// override configuration options with user supplied object
		cfg = $extend(cfg, g ? { over: f, out: g } : f );

		// instantiate variables
		// cX, cY = current X and Y position of mouse, updated by mousemove event
		// pX, pY = previous X and Y position of mouse, set by mouseover and polling interval
		var cX, cY, pX, pY;

		// A private function for getting mouse position
		var track = function(ev) {
			if(!ev.pageX) {
				ev.pageX = event.clientX + (document.documentElement.scrollLeft || document.body.scrollLeft);
				ev.pageY = event.clientY + (document.documentElement.scrollTop || document.body.scrollTop);
			}
			cX = ev.pageX;
			cY = ev.pageY;
		};

		// A private function for comparing current and previous mouse position
		var compare = function(ev,ob) {
			ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
			// compare mouse positions to see if they've crossed the threshold
			if ( ( Math.abs(pX-cX) + Math.abs(pY-cY) ) < cfg.sensitivity ) {
				$(ob).removeEvent("mousemove",track);
				// set hoverIntent state to true (so mouseOut can be called)
				ob.hoverIntent_s = 1;
				return cfg.over.apply(ob,[ev]);
			} else {
				// set previous coordinates for next time
				pX = cX; pY = cY;
				// use self-calling timeout, guarantees intervals are spaced out properly (avoids JavaScript timer bugs)
				ob.hoverIntent_t = setTimeout( function(){compare(ev, ob);} , cfg.interval );
			}
		};

		// A private function for delaying the mouseOut function
		var delay = function(ev,ob) {
			ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
			ob.hoverIntent_s = 0;
			return cfg.out.apply(ob,[ev]);
		};

		// A private function for handling mouse 'hovering'
		var handleHover = function(e) {
			var p = (e.type == "mouseover" ? e.fromElement : e.toElement) || e.relatedTarget;
			while ( p && p != this ) { try { p = p.parentNode; } catch(e) { p = this; } }
			if ( p == this ) { return false; }

			// copy objects to be passed into t (required for event object to be passed in IE)
			var ev = $extend({},e);
			var ob = this;

			// cancel hoverIntent timer if it exists
			if (ob.hoverIntent_t) { ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); }

			// else e.type == "onmouseover"
			if (e.type == "mouseover") {
				if(!ev.pageX) {
					ev.pageX = event.clientX + (document.documentElement.scrollLeft || document.body.scrollLeft);
					ev.pageY = event.clientY + (document.documentElement.scrollTop || document.body.scrollTop);
				}
				// set "previous" X and Y position based on initial entry point
				pX = ev.pageX; pY = ev.pageY;
				// update "current" X and Y position based on mousemove
				ob.addEvent("mousemove",track);
				// start polling interval (self-calling timeout) to compare mouse coordinates over time
				if (ob.hoverIntent_s != 1) { ob.hoverIntent_t = setTimeout( function(){compare(ev,ob);} , cfg.interval );}

			// else e.type == "onmouseout"
			} else {
				// unbind expensive mousemove event
				ob.removeEvent("mousemove",track);
				// if hoverIntent state is true, then call the mouseOut function after the specified delay
				if (ob.hoverIntent_s == 1) { ob.hoverIntent_t = setTimeout( function(){delay(ev,ob);} , cfg.timeout );}
			}
		};

		// bind the function to the two event listeners
		return this.addEvents({'mouseover': handleHover,'mouseout': handleHover});
	}
});			

window.onDomReady(function(){
 MGHTools.init();

 var pageUrl = window.location.href.split('?')[0];
 pageUrl = pageUrl.toLowerCase();
 
    if (pageUrl.indexOf('heartcenter') != -1 ||
        pageUrl.indexOf('vascularcenter') != -1 ||
        pageUrl.indexOf('digestive') != -1 ||
        pageUrl.indexOf('cancer') != -1 ||
        pageUrl.indexOf('transplant') != -1)
    {
       //no SAYT for centers
    }
    else
    {
        searchAsYouType.initialize(document.getElementById('searchBox'), false);
    }

});


function textResize(size)
{
    MGHTools.createTextStyle(size);
}