/* =================================================================================================
* NiceTitles
* 21st January 2004
* http://neo.dzygn.com/code/nicetitles
*
* NiceTitles turns your boring (X)HTML tags into a dynamic experience
*
* Copyright (c) 2003 - 2004 Stuart Langridge, Paul McLanahan, Peter Janes, Brad Choate, Dunstan Orchard, Ethan Marcotte, Mark Wubben
*
* Licensed under MIT - http://www.opensource.org/licenses/mit-license.php
==================================================================================================*/

function NiceTitles(sTemplate, nDelay, nMarginX, nMarginY, sContainerID, sClassName){
	var oTimer;
	var isActive = false;
	var sNameSpaceURI = "http://www.w3.org/1999/xhtml";

	if(!sTemplate){ sTemplate = "attr(nicetitle)";}
	if(!nDelay || nDelay <= 0){ nDelay = false;}
	if(!nMarginX){ nMarginX = 15; }
	if(!nMarginY){ nMarginY = 35; }
	if(!sContainerID){ sContainerID = "nicetitlecontainer";}
	if(!sClassName){ sClassName = "nicetitle";}

	var oContainer = document.getElementById(sContainerID);
	if(!oContainer){
		oContainer = document.createElementNS ? document.createElementNS(sNameSpaceURI, "div") : document.createElement("div");
		oContainer.setAttribute("id", sContainerID);
		oContainer.className = sClassName;
		oContainer.style.display = "none";
		document.getElementsByTagName("body").item(0).appendChild(oContainer);
	}

	//=====================================================================
	// Method addElements (Public)
	//=====================================================================
	this.addElements = function addElements(collNodes, sAttribute){
		var currentNode, sTitle;

		for(var i = 0; i < collNodes.length; i++){
			currentNode = collNodes[i];

			sTitle = currentNode.getAttribute(sAttribute);
			if(sTitle || currentNode.name != ''){
				if(sTitle == '') {
					currentNode.setAttribute("nicetitle", "<span></span>");
				} else {
					currentNode.setAttribute("nicetitle", sTitle);
				}
				currentNode.removeAttribute(sAttribute);
				addEvent(currentNode, 'mouseover', show);
				addEvent(currentNode, 'mouseout', hide);
				addEvent(currentNode, 'focus', show);
				addEvent(currentNode, 'blur', hide);
			}
		}

	}

	//=====================================================================
	// Other Methods (All Private)
	//=====================================================================
	function show(e){
		if(isActive){ hide(); }

		var oNode = window.event ? window.event.srcElement : e.currentTarget;
		if(!oNode.getAttribute("nicetitle")){
			while(oNode.parentNode){
				oNode = oNode.parentNode; // immediately goes to the parent, thus we can only have element nodes
				if(oNode.getAttribute) {
					if(oNode.getAttribute("nicetitle")){ break;	}
				}
			}
		}

		var sOutput = parseTemplate(oNode);
		setContainerContent(sOutput);
		var oPosition = getPosition(e, oNode);
		oContainer.style.left = oPosition.x;
		oContainer.style.top = oPosition.y;

		if(nDelay){
			oTimer = setTimeout(function(){oContainer.style.display = "block";}, nDelay);
		} else {
			oContainer.style.display = "block";
		}

		isActive = true;
		// Let's put this event to a halt before it starts messing things up
		window.event ? window.event.cancelBubble = true : e.stopPropagation();
	}

	function hide(){
		clearTimeout(oTimer);
		oContainer.style.display = "none";
		removeContainerContent();
		isActive = false;
	}

	function setContainerContent(sOutput){
		sOutput = sOutput.replace(/&/g, "&amp;");
		if(document.createElementNS && window.DOMParser){
			var oXMLDoc = (new DOMParser()).parseFromString("<root xmlns=\""+sNameSpaceURI+"\">"+sOutput+"</root>", "text/xml");
			var oOutputNode = document.importNode(oXMLDoc.documentElement, true);
			var oChild = oOutputNode.firstChild;
			var nextChild;
			while(oChild){
				nextChild = oChild.nextSibling; // One's the child is appended, the nextSibling reference is gone
				oContainer.appendChild(oChild);
				oChild = nextChild;
			}
		} else {
			oContainer.innerHTML = sOutput;
		}
	}

	function removeContainerContent(){
		var oChild = oContainer.firstChild;
		var nextChild;

		if(!oChild){ return; }
		while(oChild){
			nextChild = oChild.nextSibling;
			oContainer.removeChild(oChild);
			oChild =  nextChild;
		}
	}

	function getPosition(e, oNode){
		var oViewport = getViewport();
		var oCoords;
		var commonEventInterface = window.event ? window.event : e;

		oContainer.style.visiblity = "hidden"; // oContainer needs to be displayed before width and height can be retrieved
		oContainer.style.display =  "block";
		var containerWidth = oContainer.offsetWidth;
		var containerHeight = oContainer.offsetHeight;
		oContainer.style.display = "none"; // hide it again
		oContainer.style.visiblity = "visible";

		// Si el margen es negativo le aņadimos el ancho del tooltip
		var tmpX = nMarginX;
		if(nMarginX < 0) tmpX = nMarginX - containerWidth;

		if(commonEventInterface.type == "focus"){
			oCoords = getNodePosition(oNode);
			oCoords.x += tmpX // nMarginX;
			oCoords.y += nMarginY;
		} else {
			oCoords = { x : commonEventInterface.clientX + oViewport.x + tmpX, y : commonEventInterface.clientY + oViewport.y + nMarginY};
		}


		if(oCoords.x + containerWidth + 10 >= oViewport.width + oViewport.x){
			oCoords.x = oViewport.width + oViewport.x - containerWidth - 10;
		} else if(oCoords.y + containerHeight + 10 >= oViewport.height + oViewport.y){
			oCoords.y = oViewport.height + oViewport.y - containerHeight - oNode.offsetHeight - 10;
		}


		/******************************************/
		oCoords.y = oCoords.y -20;
		/******************************************/

        oCoords.x += "px";
		oCoords.y += "px";

		return oCoords;
	}

	function parseTemplate(oNode){
		var sAttribute, collOptionalAttributes;
		var oFound = {};
		var sResult = sTemplate;

		if(sResult.match(/content\(\)/)){
			sResult = sResult.replace(/content\(\)/g, getContentOfNode(oNode));
		}

		var collSearch = sResult.split(/attr\(/);
		for(var i = 1; i < collSearch.length; i++){
			sAttribute = collSearch[i].split(")")[0];
			if(oNode.getAttribute) {
				oFound[sAttribute] = oNode.getAttribute(sAttribute);
			}
		}

		var collOptional = sResult.split("?")
		for(var i = 1; i < collOptional.length; i += 2){
			collOptionalAttributes = collOptional[i].split("attr(");
			for(var j = 1; j < collOptionalAttributes.length; j++){
				sAttribute = collOptionalAttributes[j].split(")")[0];

				if(!oFound[sAttribute]){ sResult = sResult.replace(new RegExp("\\?[^\\?]*attr\\("+sAttribute+"\\)[^\\?]*\\?", "g"), "");	}
			}
		}
		sResult = sResult.replace(/\?/g, "");

		for(sAttribute in oFound){
			sResult = sResult.replace("attr\("+sAttribute+"\)", oFound[sAttribute]);
		}

		// alert(sResult);

		return sResult;
	}

	function getContentOfNode(oNode){
		var sContent = "";
		var oSearch = oNode.firstChild;

		while(oSearch){
			if(oSearch.nodeType == 3){
				sContent += oSearch.nodeValue;
			} else if(oSearch.nodeType == 1 && oSearch.hasChildNodes){
				sContent += getContentOfNode(oSearch);
			}
			oSearch = oSearch.nextSibling
		}

		return sContent;
	}

	function getNodePosition(oNode){
		var x = 0;
		var y = 0;

		do {
			if(oNode.offsetLeft){ x += oNode.offsetLeft }
			if(oNode.offsetTop){ y += oNode.offsetTop }
		}	while((oNode = oNode.offsetParent) && !document.all) // IE gets the offset 'right' from the start

		return {x : x, y : y}
	}

	// Idea from 13thParallel: http://13thparallel.net/?issue=2002.06&title=viewport
	function getViewport(){
		var width = 0;
		var height = 0;
		var x = 0;
		var y = 0;

		if(document.documentElement && document.documentElement.clientWidth){
			width = document.documentElement.clientWidth;
			height = document.documentElement.clientHeight;
			x = document.documentElement.scrollLeft;
			y = document.documentElement.scrollTop;
		} else if(document.body && document.body.clientWidth){
			width = document.body.clientWidth;
			height = document.body.clientHeight;
			x = document.body.scrollLeft;
			y = document.body.scrollTop;
		}
		// we don't use an else if here, since Opera 7 tends to get the height on the documentElement wrong
		if(window.innerWidth){
			width = window.innerWidth - 18;
			height = window.innerHeight - 18;
		}

		if(window.pageXOffset){
			x = window.pageXOffset;
			y = window.pageYOffset;
		} else if(window.scrollX){
			x = window.scrollX;
			y = window.scrollY;
		}

		return {width : width, height : height, x : x, y : y };
	}
}

//=====================================================================
// Event Listener
// by Scott Andrew - http://scottandrew.com
// edited by Mark Wubben, <useCapture> is now set to false
//=====================================================================
function addEvent(obj, evType, fn){
	if(obj.addEventListener){
		obj.addEventListener(evType, fn, false);
		return true;
	} else if (obj.attachEvent){
		var r = obj.attachEvent('on'+evType, fn);
		return r;
	} else {
		return false;
	}
}

//=====================================================================
// Here the default nice titles are created
//=====================================================================
NiceTitles.autoCreation = function(){
	if(!document.getElementsByTagName){ return; }

	NiceTitles.normales = new Object();
	NiceTitles.normales.anchors = new NiceTitles("?<div class=\"titleimg\"><img src=\"attr(name)\" alt=\"\" /></div>?<p class=\"titletext\">attr(nicetitle)</p>?", 100);

	NiceTitles.especiales = new Object();
	NiceTitles.especiales.anchors = new NiceTitles("?<div class=\"titleimg\"><img src=\"attr(name)\" alt=\"\" /></div>?<p class=\"titletext\">attr(nicetitle)</p>?", 100, -15);

	var links = document.getElementsByTagName("a");
	var links_normales = [];
	var links_especiales = [];
	for(var i in links) {
		if(links[i].className == 'nicetitle') {
			links_normales.push(links[i]);
		}
		if(links[i].className == 'nicetitle2') {
			links_especiales.push(links[i]);
		}
	}
	NiceTitles.normales.anchors.addElements(links_normales, "title");
	NiceTitles.especiales.anchors.addElements(links_especiales, "title");
}

addEvent(window, "load", NiceTitles.autoCreation);