function Picture() {
	this.source = "";
	this.index = -1;
	this.bib = "";
	this.lastName = "";
	this.firstName = "";
	this.unid = "";
	this.timeStamp = "";
	this.team = "";
	this.overallPos = "";
	
	
}

function RandomPicture() {

		this.HttpURL = "";
		this.ClientId = "";
		this.RaceId = "";
		this.maxpicture = -1;
		this.pictures = new Hash();
		this.currentpictureidx = 0;
		
		this.cache = new Array();
		this.cacheCount = 0;
		this.cacheRetrieve = 0;
		this.parentObjectName = "";
		
		this.getCurrentPictureIndex = function () {
			return this.currentpictureidx;
		}
		

		this.createTitle = function (picture) {		
			if (picture.bib == "") return "";
			
			var pos = picture.overallPos;
			
			if ((pos == "0") | (pos=="")) {
				pos = "";
			} else {
				pos = " (" +  pos  + ".)"
			}
			
			return "<div onclick=\"" + this.parentObjectName + ".openResult('" + picture.unid + "')\" style=\"cursor:pointer\">" + (picture.team!=""?picture.team + "<br>" + picture.bib + " - " + picture.lastName:picture.bib + " - " + picture.lastName + pos) + "</div>";
		}
				
		this.changePicture = function () {
		
			if ((this.maxpicture != -1) && (this.pictures.length >= this.maxpicture) && (this.maxpicture > 160)) {
			
				var i= parseInt(Math.random() * this.pictures.length) ;
				var pic = document.getElementById("randompic");		
				var caption = document.getElementById("randompictitle");			
				if ((pic != null) && (this.pictures[new String(i)])) {
					pic.src =this.HttpURL + this.pictures[new String(i)].source();
					this.currentpictureidx = this.pictures[new String(i)].index;
					if (caption) {
								caption.innerHTML = this.createTitle(this.pictures[new String(i)]);
					}
					return;
				}
				
			}
			
			if (this.cacheRetrieve < this.cacheCount) {
				this.cacheRetrieve++;
				var pic = document.getElementById("randompic");
				var caption = document.getElementById("randompictitle");
				
				var picturecache = this.cache[this.cacheRetrieve];
				if (picturecache) {
						var picture = this.pictures[new String(picturecache)]
						if (picture) {
							if (pic) {													
									pic.src =this.HttpURL+picture.source;
									this.currentpictureidx = picture.index;
									if (caption) {
										caption.innerHTML = this.createTitle(picture);
									}		
									return;
							}										
						}
				}
				
			}
			var url =  this.HttpURL + "showrndpicture?Open&clientid=" + this.ClientId + "&raceid=" + this.RaceId;						
			try {
	
						new Ajax.Request(url, { method:'get',
							  encoding: 'iso-8859-2',
							  onSuccess: function(transport, json){					
							  	var json = transport.responseText.evalJSON();
							     if (Object.inspect(json)) {
							     	this.cache = new Array();
							     	this.cacheRetrieve = 0;
							     	this.cacheCount = 0;							     	
							     	var pic = document.getElementById("randompic");
									var caption = document.getElementById("randompictitle");
									for (var i = 0; i < json.Pictures.length; i++) { 
											var rnd = json.Pictures[i];
											var thumb = new Picture();
											thumb.source = rnd.source;
											this.maxpicture = rnd.count;
											thumb.index = rnd.index;
											thumb.bib = rnd.bib;
											thumb.timeStamp = rnd.timeStamp;
											thumb.lastName = rnd.lastName;
											thumb.unid = rnd.unid;
											thumb.team = rnd.team;
											thumb.overallPos = rnd.overallPos
											this.pictures[new String(thumb.index)] = thumb;											
											if (i == 0) {
												if (pic) {													
													pic.src =this.HttpURL+thumb.source;
													this.currentpictureidx = thumb.index;
												}
												if (caption) {
													caption.innerHTML = this.createTitle(thumb);
												}
											} else {
												this.cache[i-1] = thumb.index;
												this.cacheCount++;
											}
											
									}
								 }
							    }.bind(this)
						  });
				} catch (e) {
				}
		}
	
	this.start = function () {	
		window.setTimeout(function () { this.changePicture(); this.start(); }.bind(this), 10000) ;
	}
	
	this.stop = function () {
		window.clearTimeout() ;
	}
}