var slideShow=function(){
	var bxs,bxe,fxs,fxe,ys,ye,ta,ia,iia,ie,st,ss,ft,fs,xp,yp,ci,t,tar,tarl,imgobjs,fields,fieldtags;
	var sliding = false;
	ia=document.getElementById('image'); // parent element where img should be attached
	iia=document.getElementById('info'); // target elements where selected img info and thumbnails should be injected
	ta=document.getElementById('thumbs'); 	
	// list of fields contained in xml for each image
	// src and thumb are required fields for large and thumbnail image
   var fieldlist = 'src,thumb,thumbheight,thumbwidth,header,abstract,industry,company,desc';
	fields=fieldlist.split(","); 
	// list of tags to wrap fields in when displayed, maps to fieldlist
	// use 'none' if the field should not be displayed in the img info block
	var fieldtaglist = 'none,none,none,none,h2,h3,p,p,p';
	fieldtags=fieldtaglist.split(",");
	t=ta.getElementsByTagName('li'); 
	ie=document.all?true:false;
	st=3; 
	ss=3; 
	ft=10; 
	fs=5; 
	xp,yp=0;

	return{
		init:function(){
		   	var xml = document.getElementById('xmlDataPool').innerHTML;
			imgobjs = xml2json.parser(xml);
 			this.genThumbs();
			this.lim();
            window.onresize=function(){setTimeout("slideShow.lim()",500)};
			this.updateScrollHover();
			len=t.length;tar=[];
			for(i=0;i<len;i++){
				var id=t[i].value; tar[i]=id;
				t[i].onclick=new Function("slideShow.getimg('"+id+"')");
				if(i==0){this.getimg(id)}
			}
			tarl=tar.length;
		},
		scrl:function(d){
			if(!sliding){
				sliding = true;
				clearInterval(ta.timer);
				var l=(d==-1)?0:(t[tarl-1].offsetLeft-(ta.parentNode.offsetWidth-t[tarl-1].offsetWidth)+10)
				ta.timer=setInterval(function(){slideShow.mv(d,l)},st);
			}
		},
		mv:function(d,l){
			ta.style.left=ta.style.left||'0px';
			var left=ta.style.left.replace('px','');
			if(d==1){
				if(l-Math.abs(left)<=ss){
					this.cncl(ta.id); ta.style.left='-'+l+'px';
				}else{ta.style.left=left-ss+'px'}
			}else{
				if(Math.abs(left)-l<=ss){
					this.cncl(ta.id); ta.style.left=l+'px';
				}else{ta.style.left=parseInt(left)+ss+'px'}
			}
		},
		cncl:function(){
			clearTimeout(ta.timer);
			ta.timer = undefined;
            sliding = false;
		},	
		nav:function(d){
			var c=0;
			for(key in tar){if(tar[key]==ci.id){c=key}}
			if(tar[parseInt(c)+d]){
				this.getimg(tar[parseInt(c)+d]);
			}else{
				if(d==1){
					this.getimg(tar[0]);
				}else{this.getimg(tar[tarl-1])}
			}
		},
		auto:function(){ia.timer=setInterval(function(){slideShow.nav(1)},autodelay*1000)},
		fdin:function(i){
			if(i.complete){i.av=i.av+fs; i.style.opacity=i.av/100; i.style.filter='alpha(opacity='+i.av+')'}
			if(i.av>=100){if(auto){this.auto()}; clearInterval(i.timer); ci=i}
		},
		fdout:function(i){
			i.av=i.av-fs; i.style.opacity=i.av/100;
			i.style.filter='alpha(opacity='+i.av+')';
			if(i.av<=0){clearInterval(i.timer); if(i.parentNode){i.parentNode.removeChild(i)}}
		},
		lim:function(){
			var taw,taa,len; taw=ta.parentNode.offsetWidth; taa=taw/4; 
			bxs=slideShow.leftpos(ta); bxe=bxs+taa; fxe=bxs+taw; fxs=fxe-taa;
		},
		leftpos:function(t){
			var l=0;
			if(t.offsetParent){
				while(1){l+=t.offsetLeft; if(!t.offsetParent){break}; t=t.offsetParent}
			}else if(t.x){l+=t.x}
			return l;
		},
		toppos:function(t){
			var p=0;
			if(t.offsetParent){
				while(1){p+=t.offsetTop; if(!t.offsetParent){break}; t=t.offsetParent}
			}else if(t.y){p+=t.y}
			return p;
		},
		stop:function(){clearInterval(ia.timer)},

	    // getimg modified to inject selected info block
	 	getimg:function(id){
			if(auto){clearTimeout(ia.timer)}
			if(ci){
				var ts,tsl,x;
				ts=ia.getElementsByTagName('img'); tsl=ts.length;x=0;
				for(x;x<tsl;x++){
					if(ci.id!=id){var o=ts[x]; clearInterval(o.timer); o.timer=setInterval(function(){slideShow.fdout(o)},fs)}
				}
			}
			if(!document.getElementById(id)){
				var currimg = imgobjs.items.item[id-1];
				var i=document.createElement('img');
				ia.appendChild(i);
				i.id=id; i.av=0; i.style.opacity=0;
				i.style.filter='alpha(opacity=0)';
				i.src = currimg.src;
				// loop through fields to create and inject info block for
				// selected image 
				// wraps each item listed in fieldlist with corresponding tag
				// in fieldtaglist and injects into img_info_id element
				var infostr = "";
				for(j=0;j<fields.length;j++){
					var currt = fieldtags[j];
					if(currt != 'none'){
						currf = currimg[fields[j]];
						if(typeof currf == "string"){
							infostr += "<"+currt+">"+currf+"</"+currt+">";
						}
					}
				}
				iia.innerHTML = infostr;
				this.updateScrollHover();
			}else{
				i=document.getElementById(id); clearInterval(i.timer);
			}
			i.timer=setInterval(function(){slideShow.fdin(i)},fs);
		},

		// genThumbs - created to loop through img objects and generate thumbnail html
		genThumbs:function(){
			var htmlstr = "";
			for(i=0;i<imgobjs.items.item.length;i++){
				var idx = i+1;
                curimg = imgobjs.items.item[i];
				htmlstr += '<li value="'+idx+'"><img src="'+curimg.thumb+'" width="'+curimg.thumbwidth+'" height="'+curimg.thumbheight+'" alt="" /></li>';
			}
			document.getElementById('thumbs').innerHTML = htmlstr;
		},

		updateScrollHover:function(){
			ys=this.toppos(ta); ye=ys+ta.offsetHeight;
		}
	};
}();

/*
xml2json v 1.1
copyright 2005-2007 Thomas Frank

This program is free software under the terms of the 
GNU General Public License version 2 as published by the Free 
Software Foundation. It is distributed without any warranty.
*/

xml2json={
	parser:function(xmlcode,ignoretags,debug){
		if(!ignoretags){ignoretags=""};
		xmlcode=xmlcode.replace(/\s*\/>/g,'/>');
		xmlcode=xmlcode.replace(/<\?[^>]*>/g,"").replace(/<\![^>]*>/g,"");
		if (!ignoretags.sort){ignoretags=ignoretags.split(",")};
		var x=this.no_fast_endings(xmlcode);
		x=this.attris_to_tags(x);
		x=escape(x);
		x=x.split("%3C").join("<").split("%3E").join(">").split("%3D").join("=").split("%22").join("\"");
		for (var i=0;i<ignoretags.length;i++){
			x=x.replace(new RegExp("<"+ignoretags[i]+">","g"),"*$**"+ignoretags[i]+"**$*");
			x=x.replace(new RegExp("</"+ignoretags[i]+">","g"),"*$***"+ignoretags[i]+"**$*")
		};
		x='<JSONTAGWRAPPER>'+x+'</JSONTAGWRAPPER>';
		this.xmlobject={};
		var y=this.xml_to_object(x).jsontagwrapper;
		if(debug){y=this.show_json_structure(y,debug)};
		return y
	},
	xml_to_object:function(xmlcode){
		var x=xmlcode.replace(/<\//g,"§");
		x=x.split("<");
		var y=[];
		var level=0;
		var opentags=[];
		for (var i=1;i<x.length;i++){
			var tagname=x[i].split(">")[0];
			opentags.push(tagname);
			level++
			y.push(level+"<"+x[i].split("§")[0]);
			while(x[i].indexOf("§"+opentags[opentags.length-1]+">")>=0){level--;opentags.pop()}
		};
		var oldniva=-1;
		var objname="this.xmlobject";
		for (var i=0;i<y.length;i++){
			var preeval="";
			var niva=y[i].split("<")[0];
			var tagnamn=y[i].split("<")[1].split(">")[0];
			tagnamn=tagnamn.toLowerCase();
			var rest=y[i].split(">")[1];
			if(niva<=oldniva){
				var tabort=oldniva-niva+1;
				for (var j=0;j<tabort;j++){objname=objname.substring(0,objname.lastIndexOf("."))}
			};
			objname+="."+tagnamn;
			var pobject=objname.substring(0,objname.lastIndexOf("."));
			if (eval("typeof "+pobject) != "object"){preeval+=pobject+"={value:"+pobject+"};\n"};
			var objlast=objname.substring(objname.lastIndexOf(".")+1);
			var already=false;
			for (k in eval(pobject)){if(k==objlast){already=true}};
			var onlywhites=true;
			for(var s=0;s<rest.length;s+=3){
				if(rest.charAt(s)!="%"){onlywhites=false}
			};
			if (rest!="" && !onlywhites){
				if(rest/1!=rest){
					rest="'"+rest.replace(/\'/g,"\\'")+"'";
					rest=rest.replace(/\*\$\*\*\*/g,"</");
					rest=rest.replace(/\*\$\*\*/g,"<");
					rest=rest.replace(/\*\*\$\*/g,">")
				}
			} 
			else {rest="{}"};
			if(rest.charAt(0)=="'"){rest='unescape('+rest+')'};
			if (already && !eval(objname+".sort")){preeval+=objname+"=["+objname+"];\n"};
			var before="=";after="";
			if (already){before=".push(";after=")"};
			var toeval=preeval+objname+before+rest+after;
			eval(toeval);
			if(eval(objname+".sort")){objname+="["+eval(objname+".length-1")+"]"};
			oldniva=niva
		};
		return this.xmlobject
	},
	show_json_structure:function(obj,debug,l){
		var x='';
		if (obj.sort){x+="[\n"} else {x+="{\n"};
		for (var i in obj){
			if (!obj.sort){x+=i+":"};
			if (typeof obj[i] == "object"){
				x+=this.show_json_structure(obj[i],false,1)
			}
			else {
				if(typeof obj[i]=="function"){
					var v=obj[i]+"";
					//v=v.replace(/\t/g,"");
					x+=v
				}
				else if(typeof obj[i]!="string"){x+=obj[i]+",\n"}
				else {x+="'"+obj[i].replace(/\'/g,"\\'").replace(/\n/g,"\\n").replace(/\t/g,"\\t").replace(/\r/g,"\\r")+"',\n"}
			}
		};
		if (obj.sort){x+="],\n"} else {x+="},\n"};
		if (!l){
			x=x.substring(0,x.lastIndexOf(","));
			x=x.replace(new RegExp(",\n}","g"),"\n}");
			x=x.replace(new RegExp(",\n]","g"),"\n]");
			var y=x.split("\n");x="";
			var lvl=0;
			for (var i=0;i<y.length;i++){
				if(y[i].indexOf("}")>=0 || y[i].indexOf("]")>=0){lvl--};
				tabs="";for(var j=0;j<lvl;j++){tabs+="\t"};
				x+=tabs+y[i]+"\n";
				if(y[i].indexOf("{")>=0 || y[i].indexOf("[")>=0){lvl++}
			};
			if(debug=="html"){
				x=x.replace(/</g,"&lt;").replace(/>/g,"&gt;");
				x=x.replace(/\n/g,"<BR>").replace(/\t/g,"&nbsp;&nbsp;&nbsp;&nbsp;")
			};
			if (debug=="compact"){x=x.replace(/\n/g,"").replace(/\t/g,"")}
		};
		return x
	},
	no_fast_endings:function(x){
		x=x.split("/>");
		for (var i=1;i<x.length;i++){
			var t=x[i-1].substring(x[i-1].lastIndexOf("<")+1).split(" ")[0];
			x[i]="></"+t+">"+x[i]
		}	;
		x=x.join("");
		return x
	},
	attris_to_tags: function(x){
		var d=' ="\''.split("");
		x=x.split(">");
		for (var i=0;i<x.length;i++){
			var temp=x[i].split("<");
			for (var r=0;r<4;r++){temp[0]=temp[0].replace(new RegExp(d[r],"g"),"_jsonconvtemp"+r+"_")};
			if(temp[1]){
				temp[1]=temp[1].replace(/'/g,'"');
				temp[1]=temp[1].split('"');
				for (var j=1;j<temp[1].length;j+=2){
					for (var r=0;r<4;r++){temp[1][j]=temp[1][j].replace(new RegExp(d[r],"g"),"_jsonconvtemp"+r+"_")}
				};
				temp[1]=temp[1].join('"')
			};
			x[i]=temp.join("<")
		};
		x=x.join(">");
		x=x.replace(/ ([^=]*)=([^ |>]*)/g,"><$1>$2</$1");
		x=x.replace(/>"/g,">").replace(/"</g,"<");
		for (var r=0;r<4;r++){x=x.replace(new RegExp("_jsonconvtemp"+r+"_","g"),d[r])}	;
		return x
	}
};
if(!Array.prototype.push){
	Array.prototype.push=function(x){
		this[this.length]=x;
		return true
	}
};
if (!Array.prototype.pop){
	Array.prototype.pop=function(){
  		var response = this[this.length-1];
  		this.length--;
  		return response
	}
};