// Author: Kevin Yank | sitepoint.com
// Description: Targets blank in xhtml strict

function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}


// Author: Travis Beckham | squidfingers.com
// Description: Remove anchor outlines from all links in the document

function blurAnchors() {
  if(document.getElementsByTagName){
    var a = document.getElementsByTagName("a");
    for(var i = 0; i < a.length; i++){
      a[i].onfocus = function(){this.blur()};
    }
  }
}


// Author: http://web-graphics.com/mtarchive/001659.php#chatty005317
// Unobtrusive scroller object

var fdScroller = {
        scrollLoop:false,
        scrollInterval:null,
        currentBlock:null,
        lastY:0,
        requestedY:0,
        init: function() {
                var lnks = document.getElementsByTagName('a');
                var removeLoc = window.location + ' ';

                // strip any #target, force a String cast
                if(removeLoc.indexOf('#') != -1) {
                        removeLoc = removeLoc.substr(0, removeLoc.indexOf('#'));
                } else {
                        removeLoc = removeLoc.substr(0, removeLoc.length - 1);
                }

                for(var i = 0, lnk; lnk = lnks[i]; i++) {
                        tmploc = lnk.href.replace(removeLoc,'');
                        if(tmploc.charAt(0) == '#' && !lnk.onclick) lnk.onclick = fdScroller.initScroll;
                }
        },
        getWindowHeight: function(){
                var myHeight = 0;
                if( typeof( window.innerWidth ) == 'number' ) {
                        //Non-IE
                        myHeight = window.innerHeight;
                } else if( document.documentElement &&
                                ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
                        //IE 6+ in 'standards compliant mode'
                        myHeight = document.documentElement.clientHeight;
                } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
                        //IE 4 compatible
                        myHeight = document.body.clientHeight;
                }
                return myHeight;
        },
        getScrollLeft: function(){
                if(document.all) return (document.documentElement.scrollLeft) ? document.documentElement.scrollLeft : document.body.scrollLeft;
                else return window.pageXOffset;
        },
        getScrollTop: function(){
                if(document.all) return (document.documentElement.scrollTop) ? document.documentElement.scrollTop : document.body.scrollTop;
                else return window.pageYOffset;
        },
        getElementYpos: function(el){
                var y = 0;
                while(el.offsetParent){
                        y += el.offsetTop
                        el = el.offsetParent;
                }
                return y;
        },
        initScroll: function(e){
                var targ;

                if (!e) var e = window.event;
                if (e.target) targ = e.target;
                else if (e.srcElement) targ = e.srcElement;
                if (targ.nodeType == 3) targ = targ.parentNode;

                if(targ.href && targ.href.indexOf('#') != -1) {
                        var where = targ.href.substr(targ.href.indexOf('#')+1,targ.href.length);
                        fdScroller.currentBlock = document.getElementById(where);
                        if(!fdScroller.currentBlock) return;

                        var documentHeight = document.getElementsByTagName('body').offsetHeight;
                        var windowHeight = fdScroller.getWindowHeight();
                        var ypos = fdScroller.getElementYpos(fdScroller.currentBlock);
                        if(ypos > documentHeight - windowHeight) ypos = documentHeight - windowHeight;
                        fdScroller.requestedY = ypos;
                        fdScroller.scroll();
                }

                return false;
        },
        scroll: function(){
                var left = fdScroller.getScrollLeft();
                var top  = fdScroller.getScrollTop();

                if(Math.abs(top-fdScroller.requestedY) <= 1){
                        window.scrollTo(0,fdScroller.requestedY);
                        fdScroller.lastY = -1;
                } else {
                        fdScroller.lastY = top;
                        window.scrollTo(0, Math.round(top+((fdScroller.requestedY-top)/2)));
                        setTimeout(fdScroller.scroll,50);
                }
        }
}


// run all scripts

function runScripts()
{
  externalLinks();
  blurAnchors();
  fdScroller.init();
} 
window.onload = runScripts;


/* =================================================================================================
* NiceTitles
* 20th September 2004
* http://neo.dzygn.com/code/nicetitles
*
* NiceTitles turns your boring (X)HTML tags into a dynamic experience
* Modified by Kevin Hale for unfoldedorigami.com use. 
* Nicetitles now works with images, form fields and follows the mouse.
*
* Copyright (c) 2003 - 2004 Stuart Langridge, Paul McLanahan, Peter Janes, 
* Brad Choate, Dunstan Orchard, Ethan Marcotte, Mark Wubben, Kevin Hale
* 
*
* Licensed under MIT - http://www.opensource.org/licenses/mit-license.php
==================================================================================================*/

function NiceTitles(sTemplate, nDelay, nStringMaxLength, nMarginX, nMarginY, sContainerID, sClassName){
	var oTimer;
	var isActive = false;
	var showingAlready = false; //added var to start cursor tracking only AFTER delay occurs in show();
	var sNameSpaceURI = "http://www.w3.org/1999/xhtml";
	
	if(!sTemplate){ sTemplate = "attr(nicetitle)";}
	if(!nDelay || nDelay <= 0){ nDelay = false;}
	if(!nStringMaxLength){ nStringMaxLength = 80; }
	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.setAttribute("nicetitle", sTitle);
				currentNode.removeAttribute(sAttribute);
				addEvent(currentNode, 'mouseover', show);
				addEvent(currentNode, 'mouseout', hide);
				addEvent(currentNode, 'mousemove', reposition); //added to allow cursor tracking
				addEvent(currentNode, 'focus', show);
				addEvent(currentNode, 'blur', hide);
				addEvent(currentNode, 'keypress', hide);
				addEvent(currentNode, 'mousedown', 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("nicetitle")){ break;	}
			}
		}

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

		//added showingAlready. cursor tracks only after delay occurs
		if(nDelay){	
			oTimer = setTimeout(function(){oContainer.style.display = "block"; showingAlready = true;}, 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;
		showingAlready = false;
	}
	
	//function added to allow cursor tracking by Kevin Hale
	function reposition(e){
		var oNode = window.event ? window.event.srcElement : e.currentTarget;

		var oPosition = getPosition(e, oNode);
		oContainer.style.left = oPosition.x;
		oContainer.style.top = oPosition.y;
		
		if(showingAlready){
		oContainer.style.display = "block";}
		else{
		oContainer.style.display = "none";}
		
		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 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; // Once 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;

		if(commonEventInterface.type == "focus"){
			oCoords = getNodePosition(oNode);	
			oCoords.x += nMarginX;
			oCoords.y += nMarginY;			
		} else {
			oCoords = { x : commonEventInterface.clientX + oViewport.x + nMarginX, y : commonEventInterface.clientY + oViewport.y + nMarginY};
		}
		
		// oContainer needs to be displayed before width and height can be retrieved
		if(showingAlready == false) // if statement prevents flickering in os x firefox when tracking cursor
			{oContainer.style.visiblity = "hidden"; 
			 oContainer.style.display =  "block";}
		var containerWidth = oContainer.offsetWidth;
		var containerHeight = oContainer.offsetHeight;
		if(showingAlready == false)
			{oContainer.style.display = "none"; 
			 oContainer.style.visiblity = "visible";}

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

		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];
			oFound[sAttribute] = oNode.getAttribute(sAttribute);
			if(oFound[sAttribute] && oFound[sAttribute].length > nStringMaxLength){
				oFound[sAttribute] = oFound[sAttribute].substring(0, nStringMaxLength) + "...";
			}
		}
		
		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){
			if (oFound[sAttribute] == null || oFound[sAttribute] == ""){oFound[sAttribute] = "Perform a context related search of this term.";		oContainer.setAttribute("id", "yqcontainer");}
			else{oContainer.setAttribute("id", "nicetitlecontainer");}
			sResult = sResult.replace("attr\("+sAttribute+"\)", oFound[sAttribute]);
		}
		//alert(oFound[sAttribute]);
		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.autoCreated = new Object();
	
	NiceTitles.autoCreated.anchors = new NiceTitles("<p class=\"titletext\">attr(nicetitle)</p><p class=\"destination\">attr(href)</p>", 600);
	NiceTitles.autoCreated.acronyms = new NiceTitles("<p class=\"titletext\">content(): attr(nicetitle)</p>", 600);
	//for image nicetitles based off alt tags
	NiceTitles.autoCreated.images = new NiceTitles("<p class=\"destination\">attr(nicetitle)</p>", 600);
	//for form nicetitles. just add title to input and textarea tags
	NiceTitles.autoCreated.input = new NiceTitles("<p class=\"destination\">attr(nicetitle)</p>", 600);
	
		

	NiceTitles.autoCreated.anchors.addElements(document.getElementsByTagName("a"), "title");
	NiceTitles.autoCreated.images.addElements(document.getElementsByTagName("img"), "alt"); //added
	NiceTitles.autoCreated.acronyms.addElements(document.getElementsByTagName("acronym"), "title");
	NiceTitles.autoCreated.acronyms.addElements(document.getElementsByTagName("abbr"), "title");
	NiceTitles.autoCreated.input.addElements(document.getElementsByTagName("input"), "title"); //added
	NiceTitles.autoCreated.input.addElements(document.getElementsByTagName("textarea"), "title"); //added
}

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