var myreg = new RegExp('([0-9]{13}|[0-9]{10})');


function loadContent(file){
 var head = document.getElementsByTagName('head').item(0)
 var scriptTag = document.getElementById('loadScript');
 if(scriptTag) head.removeChild(scriptTag);
 script = document.createElement('script');
 
 mycharset = document.characterSet ? document.characterSet :  document.charset;
 file += '&enc='+mycharset;
 script.src = file;
 script.type = 'text/javascript';
 script.charset = mycharset;
 script.id = 'loadScript';
 head.appendChild(script);

}

function ISBNClass() {
	function book(isbn,title,thumb,price,location) { 
 	 	this.ean=isbn;
		this.title = title;
  	this.thumb=thumb;
		this.price = price;
		this.location=location;
 		return this;
 	}  

	function findBook(isbn) {
		for (i=0;i<this.books.length;i++) {
				if (this.books[i].ean==isbn) 
						return i;
		}
				
		return -1;
	}
   		
	
	function getBookTitle(isbn) {
		i=this.findBook(isbn);
		return i>-1 ? this.books[i].title : false;
	}
	
	function getBookThumb(isbn) {
		i=this.findBook(isbn);
		return i>-1 ? this.books[i].thumb : false;
	}
	
	function getBookPrice(isbn) {
		i=this.findBook(isbn);
		return i>-1 ? this.books[i].price : false;
	}

	function getBookLink(isbn) {
		i=this.findBook(isbn);
		return i>-1 ? this.books[i].location : false;
	}
			
	
	function addBook(isbn,title,thumb,price,location) {
			//console.log('b: ' + this.findBook(isbn));
  		bookPos = this.findBook(isbn);
  		if(bookPos<0) {  			
   			this.books.push(new book(isbn,title,thumb,price,location));
   			//console.log('added ' + isbn + ' at position ' + (bookPos+1) + ' url: ' + location);
  		} else {
  			this.books[bookPos].title = title;
  			this.books[bookPos].thumb = thumb;
  			this.books[bookPos].price = price;
  			this.books[bookPos].location = location;
  			//console.log('edited (title:'+title+') ' + isbn + ' at position ' + bookPos);
  		}
  		//console.log('a');
 	} 
 	this.books=new Array();
 	this.addBook=addBook;
 	this.findBook=findBook;
	this.getBookTitle=getBookTitle;
	this.getBookThumb=getBookThumb;
	this.getBookPrice=getBookPrice;
	this.getBookLink=getBookLink;
	return this;
}



var timerId;


var myisbns = new ISBNClass();
//console.log('test:' +myisbns.findBook('12312312313'));


function updateBokssonDiv(isbn) {
	titel = myisbns.getBookTitle(isbn);
	thumb = myisbns.getBookThumb(isbn);
	pris = myisbns.getBookPrice(isbn);
	booklocation = myisbns.getBookLink(isbn);
	
	if (document.getElementById('bokssondiv')) {
		
		/* fixa den stackars länken */
		document.getElementById(isbn).href = booklocation;
		
		if (document.getElementById(isbn+'_pris')) {
			isbnpris=document.getElementById(isbn+'_pris');
			isbnpris.replaceChild(document.createTextNode(pris),isbnpris.firstChild);

			isbntitel=document.getElementById(isbn+'_titel');
			isbntitel.href = booklocation;
			isbntitel.replaceChild(document.createTextNode(titel),isbntitel.firstChild);
	
			isbnthumb = document.getElementById(isbn+'_imglink');
			isbnthumb.href = booklocation;
			isbnthumb.firstChild.src = thumb;

		}
		return true;
	}
	return false;
}

function findPosY(obj)
{
  var curtop = 0;
  if(obj.offsetParent)
      while(1)
      {
        curtop += obj.offsetTop;
        if(!obj.offsetParent)
          break;
        obj = obj.offsetParent;
      }
  else if(obj.y)
      curtop += obj.y;
  return curtop;
}


function createBokssonDiv(tempX,tempY,isbn) {
	//console.log('tempX: ' + tempX + ' tempY:' +tempY);
	/* ta  bort om redan finns .. */
	//console.log('skapar jidder: ' + isbn);
	bokssondiv = document.getElementById('bokssondiv')
	if (bokssondiv) bokssondiv.parentNode.removeChild(bokssondiv);
	
	bokssondiv = document.createElement('div');
	bokssondiv.onmouseover = function (e) {
														window.clearTimeout(timerId);
													}
	
	bokssondiv.onmouseout = function (e) {
													
														timerId = window.setTimeout('closeBokssonDiv()',100);
													}
	
	//divven
	bokssondiv.style.position='absolute';
	bokssondiv.style.left = tempX + 'px';
	bokssondiv.style.top = tempY + 'px';
	bokssondiv.style.height = '311px';
	bokssondiv.style.width = '147px';
	
	
	// bra browers
	if (window.XMLHttpRequest) {
		bokssondiv.style.backgroundImage = 'url(http://www.boksson.se/img/ruta.png)';
		bokssondiv.style.backgroundRepeat = 'no-repeat';
		bokssondiv.style.backgroundPosition = 'top left';
	} else { // daliga browsers fran ms.
		bokssondiv.style.border = '1px solid';
		bokssondiv.style.background = 'white';
	}
	
	
	bokssondiv.style.zIndex = 1001;
	bokssondiv.style.align = 'center';
	bokssondiv.style.padding = '5px';
	bokssondiv.id = 'bokssondiv';
 
 
  // bild
 	bokssonImgA = document.createElement('a');
 	bokssonImgA.id = isbn+'_imglink';
 	//console.log(isbn+'_imglink');
 	bokssonImgA.href = myisbns.getBookLink(isbn);
 	
	bokssonimg = document.createElement('img');
	bokssonimg.src = myisbns.getBookThumb(isbn);
	bokssonimg.style.margin = '6px 2px 2px 6px';
	bokssonimg.style.padding = '0pt';
	bokssonimg.style.border = '1px solid #ccc';
	bokssonimg.id = isbn+'_thumb';
	
	bokssonImgA.appendChild(bokssonimg);
	
	
	// titel
	bokssontitel = document.createElement('p');
	bokssontitel.style.marginLeft = '8px';
	
	bokssonTitelLank = document.createElement('a');
	bokssonTitelLank.href = myisbns.getBookLink(isbn);
	bokssonTitelLank.appendChild(document.createTextNode(myisbns.getBookTitle(isbn)));
	bokssonTitelLank.id = isbn+'_titel';
	bokssonTitelLank.style.color = '#648B0D';
	bokssonTitelLank.style.fontFamily = 'arial';
	
	bokssontitel.appendChild(bokssonTitelLank);
	
	
	// pris
	bokssonpris = document.createElement('p');
	bokssonpris.id = isbn+'_pris';
	bokssonpris.style.marginLeft = '8px';
	bokssonpris.style.font = '0.8em arial';

	bokssonpris.appendChild(document.createTextNode(myisbns.getBookPrice(isbn)));
		
	
	// logo
	bokssonlogoP = document.createElement('p');
	bokssonlogoP.align = 'right';
	bokssonlogoP.style.marginRight = '20px';
	
	bokssonlogoA = document.createElement('a');
	bokssonlogoA.href = 'http://www.boksson.se/';
	bokssonlogoA.title = 'Boksson';
	
	bokssonlogoImg = document.createElement('img');
	bokssonlogoImg.src = 'http://www.boksson.se/img/boksson-mini.gif';
	
	bokssonlogoA.appendChild(bokssonlogoImg);
	bokssonlogoP.appendChild(bokssonlogoA);
	
	

 	// satt ihop
	bokssondiv.appendChild(bokssonImgA);
	bokssondiv.appendChild(bokssontitel);
	bokssondiv.appendChild(bokssonpris);
	bokssondiv.appendChild(bokssonlogoP);
	
	isbn_a.parentNode.appendChild(bokssondiv);	
}

function closeBokssonDiv() {
			bokssondiv = document.getElementById('bokssondiv');
			if (bokssondiv != null)  {
				bokssondiv.parentNode.removeChild(bokssondiv);	
			}
}


/* alterNode(node,match_length,result)
node, node to alter, 
match_length length of string matched 
result, start position of string to replace
*/
function alterNode(node,match_length,result) {
			
			firstStr = node.nodeValue.slice(0,result);
			isbnStr = node.nodeValue.slice(result,result+match_length);
			secondStr = node.nodeValue.slice(result+match_length,node.nodeValue.length);

			strippedString = isbnStr.replace(/[^0-9a-z]/g,'');
			
 			isbn_a = document.createElement('a');
 			isbn_a.className = 'isbnid';
 			isbn_a.rel = isbnStr; // okey, this is nasty, but i need something to store this ;)
 			isbn_a.id = strippedString; // spara isbn i id-taggen för framtida bruk.. :p
 			isbn_a.onmouseover = function(e) {
																

														 if (document.all) { // grab the x-y pos.s if browser is IE
														  tempX = event.srcElement.offsetLeft;
														  tempY = event.srcElement.offsetTop+15;
														 } else {  // grab the x-y pos.s if browser is NS
															tempX = e.target.offsetLeft;
															tempY = e.target.offsetTop+15;
														 }
													   
 															if (timerId>0) { 
 																window.clearTimeout(timerId); 
 																closeBokssonDiv(); 
 															}
 															if (myisbns.findBook(this.id)<0) {
 																myisbns.addBook(this.id,'Laddar titel','http://www.boksson.se/img/load.gif','Laddar data');
 																//alert(isNaN(this.id));
 																if (isNaN(this.id)) {
 																	loadContent('http://www.boksson.se/isbn_js_search.php?query='+this.rel);
 																} else {
 																	loadContent('http://www.boksson.se/isbn_js_check.php?isbn='+this.id);
 																}
 															}
 															createBokssonDiv(tempX,tempY,this.id);	
 															
 													};
			isbn_a.onmouseout = function (e) {
														timerId = window.setTimeout('closeBokssonDiv()',500);
													};
													
													
 			isbn_a.href = 'http://www.boksson.se/unknown,'+isbnStr+'.html';
 			isbn_a.appendChild(document.createTextNode(isbnStr));
			

 			//console.log(node);
 			parentRef = node.parentNode;
 			parentRef.removeChild(node);
 			//console.log('lägger till: ' + firstStr);
 			parentRef.appendChild(document.createTextNode(firstStr));
 			//console.log('lägger till: ' + isbnStr);
 			parentRef.appendChild(isbn_a);
 			//console.log('lägger till: ' + secondStr);
 			parentRef.appendChild(document.createTextNode(secondStr));
 			
 			//node.parent.replaceNode(	
}



function traverse(node) { 
 	if (node.childNodes.length>0) {
  	for (var i=0;i<node.childNodes.length;i++) {
      traverse(node.childNodes[i]);
    }
	 } else { // item

 		match = myreg.exec(node.nodeValue);
 		if (match && node.parentNode.className != 'isbnid' && node.parentNode.nodeName != 'A') {
 			result = node.nodeValue.search(myreg);
 			alterNode(node,match[0].length,result);	
 		}
 		 		
 		if (node.parentNode && node.parentNode.className == 'boksson' && node.parentNode.getElementsByTagName('a').length < 1) {
 				alterNode(node,node.nodeValue.length, 0);

 		}	 
 	}

}

function boksson_init() {
	traverse(window.document.body);	
}

if(typeof window.addEventListener != 'undefined')
{
	//.. gecko, safari, konqueror and standard
	window.addEventListener('load', boksson_init, false);
}
else if(typeof document.addEventListener != 'undefined')
{
	//.. opera 7
	document.addEventListener('load', boksson_init, false);
}
else if(typeof window.attachEvent != 'undefined')
{
	//.. win/ie
	window.attachEvent('onload', boksson_init);
}