var video_thumb = {
	OriPicNum	: 0,
	CurDocument : 0,
	CurPicNum : 1,
	CurUrl : "",
	CurThumb : "",
    timeoutId: 0,
	
	preLoadPicture: function(pic) {
		var heavyImage = new Image(); 
		heavyImage.src = this.CurUrl + '_' + this.strpad(pic,2,'0') + ".jpg";
	},

	nextThumbnail: function() {
		if (this.CurDocument != 0) {
			$("#thumb_" + this.CurDocument).attr('src', this.CurUrl + '_' + this.strpad(this.CurPicNum,2,'0') + ".jpg");
			var nextthumb = this.CurPicNum+1;
			if(nextthumb > this.OriPicNum) nextthumb = 1;
			this.preLoadPicture(nextthumb);
			this.CurPicNum = nextthumb;
			this.timeoutId = setTimeout(function(thisObj){ thisObj.nextThumbnail();},1000,this);
		}
	},

	stopThumbSlide: function() {
		var tmpDoc = this.CurDocument;
		this.CurDocument = 0;
		$("#thumb_" + tmpDoc).attr('src', this.CurThumb);
		
		this.CurThumb = '';
		video_common.startAnim();
        clearTimeout(this.timeoutId);
        this.timeoutId = 0;
	},

	startThumbSlide: function(IdDoc, Amount, Url) {
		if (this.CurDocument == 0 && Amount > 0) {
			video_common.stopAnim();
			this.OriPicNum = Amount;
			this.CurDocument = IdDoc;
			this.CurUrl = Url;
			this.CurPicNum = 1;
			this.CurThumb = $("#thumb_" + IdDoc).attr('src');
			
			this.nextThumbnail();
		}
	},
	strpad: function(inputString, chars, padSting) {
	  result = padSting+inputString;
	  remFromLeft=result.length-chars;
	  return result.substr(remFromLeft);
	}
};