/*
	DOMhelp 1.0
	written by Chris Heilmann
	http://www.wait-till-i.com
	To be featured in "Beginning JavaScript for Practical Web Development, Including  AJAX" 
*/
DOMhelp={
	debugWindowId:'DOMhelpdebug',
	init:function(){
		if(!document.getElementById || !document.createTextNode){return;}
	},
	lastSibling:function(node){
		var tempObj=node.parentNode.lastChild;
		while(tempObj.nodeType!=1 && tempObj.previousSibling!=null){
			tempObj=tempObj.previousSibling;
		}
		return (tempObj.nodeType==1)?tempObj:false;
	},
	firstSibling:function(node){
		var tempObj=node.parentNode.firstChild;
		while(tempObj.nodeType!=1 && tempObj.nextSibling!=null){
			tempObj=tempObj.nextSibling;
		}
		return (tempObj.nodeType==1)?tempObj:false;
	},
	getText:function(node){
		if(!node.hasChildNodes()){return false;}
		var reg=/^\s+$/;
		var tempObj=node.firstChild;
		while(tempObj.nodeType!=3 && tempObj.nextSibling!=null || reg.test(tempObj.nodeValue)){
			tempObj=tempObj.nextSibling;
		}
		return tempObj.nodeType==3?tempObj.nodeValue:false;
	},
	setText:function(node,txt){
		if(!node.hasChildNodes()){return false;}
		var reg=/^\s+$/;
		var tempObj=node.firstChild;
		while(tempObj.nodeType!=3 && tempObj.nextSibling!=null || reg.test(tempObj.nodeValue)){
			tempObj=tempObj.nextSibling;
		}
		if(tempObj.nodeType==3){tempObj.nodeValue=txt}else{return false;}
	},
	createLink:function(to,txt){
		var tempObj=document.createElement('a');
		tempObj.appendChild(document.createTextNode(txt));
		tempObj.setAttribute('href',to);
		return tempObj;
	},
	createTextElm:function(elm,txt){
		var tempObj=document.createElement(elm);
		tempObj.appendChild(document.createTextNode(txt));
		return tempObj;
	},
	closestSibling:function(node,direction){
		var tempObj;
		if(direction==-1 && node.previousSibling!=null){
			tempObj=node.previousSibling;
			while(tempObj.nodeType!=1 && tempObj.previousSibling!=null){
				 tempObj=tempObj.previousSibling;
			}
		}else if(direction==1 && node.nextSibling!=null){
			tempObj=node.nextSibling;
			while(tempObj.nodeType!=1 && tempObj.nextSibling!=null){
				 tempObj=tempObj.nextSibling;
			}
		}
		return tempObj.nodeType==1?tempObj:false;
	},
	initDebug:function(){
		if(DOMhelp.debug){DOMhelp.stopDebug();}
		DOMhelp.debug=document.createElement('div');
		DOMhelp.debug.setAttribute('id',DOMhelp.debugWindowId);
		document.body.insertBefore(DOMhelp.debug,document.body.firstChild);
	},
	setDebug:function(bug){
		if(!DOMhelp.debug){DOMhelp.initDebug();}
		DOMhelp.debug.innerHTML+=bug+'\n';
	},
	stopDebug:function(){
		if(DOMhelp.debug){
			DOMhelp.debug.parentNode.removeChild(DOMhelp.debug);
			DOMhelp.debug=null;
		}
	},
	getKey:function(e){
		if(window.event){
	      var key = window.event.keyCode;
	    } else if(e){
	      var key=e.keyCode;
	    }
		return key;
	},
/* helper methods */
	getTarget:function(e){
		var target = window.event ? window.event.srcElement : e ? e.target : null;
		if (!target){return false;}
		while(target.nodeType!=1 && target.nodeName.toLowerCase()!='body'){
			target=target.parentNode;
		}
		return target;
	},
	stopBubble:function(e){
		if(window.event && window.event.cancelBubble){
			window.event.cancelBubble = true;
		} 
		if (e && e.stopPropagation){
			e.stopPropagation();
		}
	},
	stopDefault:function(e){
		if(window.event && window.event.returnValue){
			window.event.returnValue = false;
		} 
		if (e && e.preventDefault){
			e.preventDefault();
		}
	},
	cancelClick:function(e){
		if (window.event){
			window.event.cancelBubble = true;
			window.event.returnValue = false;
		}
		if (e && e.stopPropagation && e.preventDefault){
			e.stopPropagation();
			e.preventDefault();
		}
	},
	addEvent: function(elm, evType, fn, useCapture){
		if (elm.addEventListener){
			elm.addEventListener(evType, fn, useCapture);
			return true;
		} else if (elm.attachEvent) {
			var r = elm.attachEvent('on' + evType, fn);
			return r;
		} else {
			elm['on' + evType] = fn;
		}
	},
	cssjs:function(a,o,c1,c2){
		switch (a){
			case 'swap':
				o.className=!DOMhelp.cssjs('check',o,c1)?o.className.replace(c2,c1):o.className.replace(c1,c2);
			break;
			case 'add':
				if(!DOMhelp.cssjs('check',o,c1)){o.className+=o.className?' '+c1:c1;}
			break;
			case 'remove':
				var rep=o.className.match(' '+c1)?' '+c1:c1;
				o.className=o.className.replace(rep,'');
			break;
			case 'check':
				var found=false;
				var temparray=o.className.split(' ');
				for(var i=0;i<temparray.length;i++){
					if(temparray[i]==c1){found=true;}
				}
				return found;
			break;
		}
	},
    safariClickFix:function(){
      return false;
    }
}
DOMhelp.addEvent(window, 'load', DOMhelp.init, false);


var loadedobjects=""
var rootdomain="http://"+window.location.hostname

function ajaxpage(url, containerid){
var page_request = false
if (window.XMLHttpRequest) // if Mozilla, Safari etc
page_request = new XMLHttpRequest()
else if (window.ActiveXObject){ // if IE
try {
page_request = new ActiveXObject("Msxml2.XMLHTTP")
} 
catch (e){
try{
page_request = new ActiveXObject("Microsoft.XMLHTTP")
}
catch (e){}
}
}
else
return false
page_request.onreadystatechange=function(){
loadpage(page_request, containerid)
}
page_request.open('GET', url, true)
page_request.send(null)
}

function loadpage(page_request, containerid){
if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
document.getElementById(containerid).innerHTML=page_request.responseText
}

function loadobjs(){
if (!document.getElementById)
return
for (i=0; i<arguments.length; i++){
var file=arguments[i]
var fileref=""
if (loadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
if (file.indexOf(".js")!=-1){ //If object is a js file
fileref=document.createElement('script')
fileref.setAttribute("type","text/javascript");
fileref.setAttribute("src", file);
}
else if (file.indexOf(".css")!=-1){ //If object is a css file
fileref=document.createElement("link")
fileref.setAttribute("rel", "stylesheet");
fileref.setAttribute("type", "text/css");
fileref.setAttribute("href", file);
}
}
if (fileref!=""){
document.getElementsByTagName("head").item(0).appendChild(fileref)
loadedobjects+=file+" " //Remember this object as being already added to page
}
}
}


// for images galleries
	function showPic (whichpic) {
		if (document.getElementById) {
			document.getElementById('placeholder').src = whichpic.href;
			return false;
		} else {
			return true;
		}
	}
	function showPic2 (whichpic) {
		if (document.getElementById) {
			document.getElementById('placeholder').src = whichpic.href;
		if (whichpic.title) { 
			document.getElementById('desc').childNodes[0].nodeValue = whichpic.title; 
		} else { 
			document.getElementById('desc').childNodes[0].nodeValue = whichpic.childNodes[0].nodeValue; 
		} 
			return false;
		} else {
			return true;
		}
	}
	sfHover = function() {
		var sfEls = document.getElementById("nav").getElementsByTagName("LI");
		for (var i=0; i<sfEls.length; i++) {
			sfEls[i].onmouseover=function() {
				this.className+=" sfhover";
			}
			sfEls[i].onmouseout=function() {
				this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
			}
		}
	}
	if (window.attachEvent) window.attachEvent("onload", sfHover);