//
// Class Scroller
//
var Scroller = Class.create();
Scroller.prototype = {
	initialize: function (tabContainer, tabContained, tabBtnNext, tabBtnPrevious) {
		this.tabContainer = tabContainer;
		this.tabContained = tabContained;
		this.tabBtnNext = tabBtnNext;
		this.tabBtnPrevious = tabBtnPrevious;
		
		Event.observe(window, 'load', this.update.bind(this));
	},
	
	update: function () {		
		var liElms = $(this.tabContained).getElementsBySelector('li');

		this.initialX = $(this.tabContained).offsetLeft;
		this.containedLiCount = liElms.length;

		// calcolo la larghezza del singolo tab
		if (liElms.length == 0) {
			return;
		} else if (liElms.length == 1) {
			var aElms = liElms[0].getElementsBySelector('a');
			if (aElms.length == 0) {
				return;
			}
			this.liWidth = aElms[0].offsetWidth;
			this.containedWidth = this.liWidth;
		} else {
			var aElms1 = liElms[0].getElementsBySelector('a');
			if (aElms1.length == 0) {
				return;
			}
			var aElms2 = liElms[1].getElementsBySelector('a');
			if (aElms2.length == 0) {
				return;
			}
			this.liWidth = aElms2[0].offsetLeft - aElms1[0].offsetLeft;
			this.containedWidth = this.liWidth * this.containedLiCount;
		}

		this.visibleLiCount = Math.floor($(this.tabContainer).offsetWidth / this.liWidth);
		
		$(this.tabContained).style.width = this.containedWidth + 'px';
		if ($(this.tabContained).firstDescendant().tagName.toUpperCase() == 'UL') {
			$(this.tabContained).firstDescendant().style.width = this.containedWidth + 'px';
		}
		
		this.finalX = $(this.tabContained).offsetLeft - this.containedWidth +
			$(this.tabContainer).offsetWidth;
		
		// posiziono sul selected
		var selElms = $(this.tabContained).getElementsByClassName('selected');
		if (selElms.length > 0) {
			var selElm = selElms[0];
			var selElmPosition = selElm.previousSiblings().length + 1;
	
			if (selElmPosition > this.visibleLiCount) {
				var newLeft = -1 * (selElmPosition - this.visibleLiCount) * this.liWidth;
				$(this.tabContained).style.left = newLeft + 'px';
			}
		}
		
		Event.observe(this.tabBtnNext, 'click', this.scroll.bind(this, false));
		Event.observe(this.tabBtnPrevious, 'click', this.scroll.bind(this, true));
	},
	
	scroll: function (left) {
		var offset = Position.positionedOffset($(this.tabContained));
	
		var newX = $(this.tabContained).offsetLeft + (left? 1 : -1) * this.visibleLiCount * this.liWidth;
		if (newX > this.initialX) {
			newX = this.initialX;
		}
		if (newX < this.finalX) {
			newX = this.finalX;
		}
		
		$(this.tabContained).style.left = (newX - this.initialX) + 'px';
	}
};


//
// Class TabSwitcher
//
var TabSwitcher = Class.create();
TabSwitcher.prototype = {
	initialize: function (tabLis, tabSelClass, tabDiv, loadingHTML, initialDiv, errorPage) {
		this.tabSelClass = tabSelClass;
		this.tabDiv = tabDiv;
		this.loadingHTML = loadingHTML;
		this.prevSelDiv = initialDiv;
		this.errorPage = errorPage;
	
		tabLis.each(function (tabLi) {
			var aElm;
			if (tabLi.tagName.toLowerCase() == 'a') {
				aElm = tabLi;
			} else {
				aElm = tabLi.getElementsBySelector('a')[0];
			}
			Event.observe(aElm, 'click', this.tabSwitch.bind(this, tabLi));
		}.bind(this));
		
		this.selLi = tabLis.find(function (tabLi) {
			return tabLi.hasClassName(tabSelClass);
		});
	},
	
	tabSwitch: function (tabLi) {
		if (this.selLi != undefined) {
			this.selLi.removeClassName(this.tabSelClass);
		}
		
		tabLi.addClassName(this.tabSelClass);
		this.selLi = tabLi;
		
		var aElm;
		if (tabLi.tagName.toLowerCase() == 'a') {
			aElm = tabLi;
		} else {
			aElm = tabLi.getElementsBySelector('a')[0];
		}
		
		if (aElm.rel.substring(0,4) == 'tab:') {
			var tabName = aElm.rel.substring(4);
			if (this.prevSelDiv != null) {
				$(this.prevSelDiv).hide();
			}
			$(tabName).show();
			this.prevSelDiv = tabName;
		} else {
			$(this.tabDiv).innerHTML = this.loadingHTML;
				
			new Ajax.Request(aElm.rel, {
				method: 'get',
				onSuccess: function (transport) {
					$(this.tabDiv).update(transport.responseText);
				}.bind(this),
				onFailure: function () {
					if (this.errorPage) {
						new Ajax.Updater({ success: this.tabDiv }, this.errorPage, {
							method: 'get',
							evalScripts: true
						});
					}		
				}.bind(this)
			});						
			
			if (this.prevSelDiv != null && this.prevSelDiv != this.tabDiv) {
				$(this.prevSelDiv).hide();
			}
			
			$(this.tabDiv).show();
			this.prevSelDiv = this.tabDiv;
		}
		
		return false;
	}
};



//
// Tables underliner
//
Event.observe(window, 'load', function() {  
	if (!window.XMLHttpRequest)   {  
		// IE6, older browsers  
		//new HoverBehavior('tr');  
		$$('table.tab_roller tr').each( function(e) {  
			Event.observe(e, 'mouseover', function() {  
				Element.addClassName(e, 'hover');  
			});  
			Event.observe(e, 'mouseout', function() {  
				Element.removeClassName(e, 'hover');  
			});  
		});  
	}  
}); 

//
// Email Check
//

// This script and many more are available free online at 
// The JavaScript Source!! http://javascript.internet.com
function emailCheck (emailStr) {
/* The following pattern is used to check if the entered e-mail address
   fits the user@domain format.  It also is used to separate the username
   from the domain. */
var emailPat=/^(.+)@(.+)$/
/* The following string represents the pattern for matching all special
   characters.  We don't want to allow special characters in the address. 
   These characters include ( ) < > @ , ; : \ " . [ ]    */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
/* The following string represents the range of characters allowed in a 
   username or domainname.  It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]"
/* The following pattern applies if the "user" is a quoted string (in
   which case, there are no rules about which characters are allowed
   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
   is a legal e-mail address. */
var quotedUser="(\"[^\"]*\")"
/* The following pattern applies for domains that are IP addresses,
   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
   e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
   non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
   For example, in john.doe@somewhere.com, john and doe are words.
   Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* The following pattern describes the structure of a normal symbolic
   domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


/* Finally, let's start trying to figure out if the supplied address is
   valid. */

/* Begin with the coarse pattern to simply break up user@domain into
   different pieces that are easy to analyze. */
var matchArray=emailStr.match(emailPat)
if (matchArray==null) {
  /* Too many/few @'s or something; basically, this address doesn't
     even fit the general mould of a valid e-mail address. */
	//alert("Email address seems incorrect (check @ and .'s)")
	return false
}
var user=matchArray[1]
var domain=matchArray[2]

// See if "user" is valid 
if (user.match(userPat)==null) {
    // user is not valid
    //alert("The username doesn't seem to be valid.")
    return false
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
   host name) make sure the IP address is valid. */
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    // this is an IP address
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        //alert("Destination IP address is invalid!")
		return false
	    }
    }
    return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	//alert("The domain name doesn't seem to be valid.")
    return false
}

/* domain name seems valid, but now make sure that it ends in a
   three-letter word (like com, edu, gov) or a two-letter word,
   representing country (uk, nl), and that there's a hostname preceding 
   the domain or country. */

/* Now we need to break up the domain to get a count of how many atoms
   it consists of. */
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>3) {
   // the address must end in a two letter or three letter word.
   //alert("The address must end in a three-letter domain, or two letter country.")
   return false
}

// Make sure there's a host name preceding the domain.
if (len<2) {
   var errStr="This address is missing a hostname!"
   //alert(errStr)
   return false
}

// If we've gotten this far, everything's valid!
return true;
}

//
// popup
//

var PopUp = Class.create();
PopUp.prototype = 
{
  initialize: function(options)
  {
    this.options = {
      url: '#',
      pageName: '',
       width: 450,
      height: 270,
	  toolbar:0,
	  resizable:1,
	  scrollbars:1,
	  left:200,
	  top:200
    }
    Object.extend(this.options, options || {});
	if(this.options.pageName=='NotiziaPrint'){this.options.width=765;this.options.height=600;}
	if(this.options.pageName=='NotiziaMail'){this.options.width=450;this.options.height=500;}
	if(this.options.pageName=='InformativaPrivacy'){this.options.height=500;}
	if(this.options.pageName=='CondizioniUtilizzo'){this.options.height=500;}
	if(this.options.pageName=='web2info'){this.options.scrollbars=0;this.options.height=560;}
    window.open(this.options.url, this.options.pageName, 'width='+this.options.width+',height='+this.options.height+',toolbar='+this.options.toolbar+',scrollbars='+this.options.scrollbars+',resizable='+this.options.resizable);
  }
}
function popup(url,width,height,pageName) {
	if (pageName == undefined) {
		pageName = "_blank";
	}		
	var winl = (screen.width - width) / 2;
	var wint = (screen.height - height) / 2;
	return window.open(url,pageName,'width='+width+',height='+height+',toolbar=no,scrollbars=no,menubar=no,resizable=no,top='+wint+',left='+winl+'');
}

function popupInviaAmico(link) {
	if (link == undefined) {
		link = '';
	} else {
		link = '?url=' + link;
	}
	return popup('/popupMail.shtml' + link,431,500,'NotiziaMail');
}

function aggiungi_feed_rss(cat) {
	document.location = '/dinamiche/login.jsp?srv=1&rsscat=' + cat + '&rsstitle=&rsslink=';
}
function aggiungi_feed_rss_esterno(title, link) {
	if (link.substring(link.length - 1) == '/') {
		link = link.substring(0, link.length - 1);
	}
	document.location = 'http://www.corrieredellosport.it/dinamiche/login.jsp?srv=1&rsscat=&rsstitle=' +
		encodeURIComponent(title) + '&rsslink=' + encodeURIComponent(link);
}

// for IE6 compatibility
function setImageSrc(where, imgSrc, onloadFnct) {
	var imgPreloader = new Image();
	imgPreloader.onload = function () {
		$(where).src = imgPreloader.src;
		imgPreloader.onload = function () {};
		if (onloadFnct) {
			onloadFnct();
		}
	};
	imgPreloader.src = imgSrc;
}

//
// ToggleWithImages
//
function toggleWithImage(idDiv)	{
	$(idDiv).toggle();
	var targetSrc;
	if ($(idDiv).style.display == 'none') {
		targetSrc = $(idDiv + '_Expander').src.replace(/Contract/, 'Expand');
	} else {
		targetSrc = $(idDiv + '_Expander').src.replace(/Expand/, 'Contract');
	}
	setImageSrc(idDiv+'_Expander', targetSrc);
}


// Effettua l'escaping dei caratteri speciali di Lucene nella stringa
function escapeLuceneQuery (query) 
{
	query = query.replace (/([\\\"\+\-\!\(\)\{\}\[\]\^\~\*\?\:])/g, '\\$1');
	query = query.replace (/\&\&/g,'\\&&');
	query = query.replace (/\|\|/g,'\\||');
	query = '"'+query+'"';

	return query;
}

// Check if banner is present
function bannerPresent(divId) {
	var banner = $(divId).descendants().find(function (elm) {
		if (elm.nodeType != 1) { // not an element
			return false;
		}
		if (elm.tagName.toUpperCase() == 'SCRIPT' ||
				elm.tagName.toUpperCase() == 'A') {
			return false;
		}
		
		if (elm.tagName.toUpperCase() == 'IMG') {
			return elm.width > 10 && elm.height > 10;
		}
		
		return true;
	});
	
	if (banner) {
		return true;
	}
	return false;
}

function bannerPresentInIFrame(iFrameId) {
	var docObj = getIFrameDocument(iFrameId);
	var flagObj = docObj.getElementById('banner_present');
	
	if (!flagObj || flagObj.innerHTML == '') {
		return null;
	}
	return flagObj.innerHTML == 'true';
}

// hide void banner on page loaded
function hideVoidBanners() {
	$$('.banner').each(function (banner) {
		if (banner.tagName.toUpperCase() != 'IFRAME' && !bannerPresent(banner)) {
			banner.hide();
		}
	});
}
Event.observe(window, 'load', hideVoidBanners);

// access the iframe internal document element
function getIFrameDocument(iframeId) {
	if ($(iframeId).contentDocument) { // Firefox
		return $(iframeId).contentDocument;
	} else if ($(iframeId).contentWindow.document) { // IE >= 6
		return $(iframeId).contentWindow.document;
	} else if ($(iframeId).document) { // IE <= 5
		return $(iframeId).document;
	}
}

// To avoid background image flickering in IE6
// cfr http://www.hedgerwow.com/360/bugs/dom-fix-ie6-background-image-flicker.html
(function(){ 
	/*Use Object Detection to detect IE6*/ 
	var m = document.uniqueID /*IE*/ && document.compatMode /*>=IE6*/ 
		&& !window.XMLHttpRequest /*<=IE6*/ && document.execCommand ; 
	try { 
		if(!!m) { 
			m("BackgroundImageCache", false, true) /* = IE6 only */ 
		} 
	} catch (e) {
	}; 
})(); 

// String length for db saving
// char count: & -> 5; <, > -> 4; \n -> 5
function dbStringLength(string) {
	var stringLength = string.length;
	string.replace(/[\n&]/g, function () { stringLength += 4 });
	string.replace(/[<>]/g, function () { stringLength += 3 });
	return stringLength;
};

function prepareStringForAttr(string) {
	return string.replace(/"/g, '&quot;').replace(/'/g, '&apos;').replace(/>/g, '&gt;');
}