// BANNER OBJECT
function Banner(objName){
    this.obj = objName;
    this.aNodes = [];
    this.currentBanner = 0;
    
};

// ADD NEW BANNER
Banner.prototype.add = function(bannerType, bannerPath, bannerDuration, height, width, hyperlink, bannerCaption) {
    this.aNodes[this.aNodes.length] = new Node(this.obj +"_"+ this.aNodes.length, bannerType, bannerPath, bannerDuration, height, width, hyperlink, bannerCaption);
};

// Node object
function Node(name, bannerType, bannerPath, bannerDuration, height, width, hyperlink, bannerCaption) {
    this.name = name;
    this.bannerType = bannerType;
    this.bannerPath = bannerPath;
    this.bannerDuration = bannerDuration;
    this.height = height
    this.width = width;
    this.hyperlink= hyperlink;
    this.bannerCaption = bannerCaption; 
//    alert (name +"|" + bannerType +"|" + bannerPath +"|" + bannerDuration +"|" + height +"|" + width + "|" + hyperlink +"|" + bannerCaption);
};

// Outputs the banner to the page
Banner.prototype.toString = function() {
    var str = "";
    var str2 = "";
    for (var iCtr=0; iCtr < this.aNodes.length; iCtr++){
        str = str + '<span name="'+this.aNodes[iCtr].name+'" '
        str = str + 'id="'+this.aNodes[iCtr].name+'" ';
        str = str + 'class="m_banner_hide" ';
        str = str + 'bgcolor="#FFFCDA" ';   
        str = str + 'align="center" ';
        str = str + 'valign="top" >\n';
        if (this.aNodes[iCtr].hyperlink != ""){
            str = str + '<a href="'+this.aNodes[iCtr].hyperlink+'">';
        }
            
        if ( this.aNodes[iCtr].bannerType == "FLASH" ){
            str = str + '<OBJECT '
            str = str + 'classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" '
            str = str + 'codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" '
            str = str + 'WIDTH="'+this.aNodes[iCtr].width+'" '
            str = str + 'HEIGHT="'+this.aNodes[iCtr].height+'" '
            str = str + 'id="bnr_'+this.aNodes[iCtr].name+'" '
            str = str + 'ALIGN="" '
            str = str + 'VIEWASTEXT>'
            str = str + '<PARAM NAME=movie VALUE="'+ this.aNodes[iCtr].bannerPath + '">'
            str = str + '<PARAM NAME=quality VALUE=high>'
            str = str + '<PARAM NAME=bgcolor VALUE=#FFFCDA>'
            str = str + '<EMBED ';
            str = str + 'src="'+this.aNodes[iCtr].bannerPath+'" '
            str = str + 'quality=high '
//            str = str + 'bgcolor=#FFFCDA '
            str = str + 'WIDTH="'+this.aNodes[iCtr].width+'" '
            str = str + 'HEIGHT="'+this.aNodes[iCtr].height+'" '
            str = str + 'NAME="bnr_'+this.aNodes[iCtr].name+'" '
            str = str + 'ALIGN="center" '
            str = str + 'TYPE="application/x-shockwave-flash" '
            str = str + 'PLUGINSPAGE="http://www.macromedia.com/go/getflashplayer">'
            str = str + '</EMBED>'
            str = str + '</OBJECT>'
        }else if ( this.aNodes[iCtr].bannerType == "IMAGE" ){  
            var maxHeight = 175;
            var maxWidth = 150;       
            str = str + '<img src="'+this.aNodes[iCtr].bannerPath+'" ';
            str = str + 'class="model" ';
            str = str + 'alt="'+this.aNodes[iCtr].bannerCaption+'" ';   
            str = str + 'height="'+this.aNodes[iCtr].maxHeight+'" ';
            str = str + 'width="'+this.aNodes[iCtr].maxWidth+'">';
        }

        if (this.aNodes[iCtr].hyperlink != ""){
            str = str + '</a>';
        }
        
        str += '</span>';
    }
    return str;
};

// START THE BANNER ROTATION
Banner.prototype.start = function(){
    this.changeBanner();
    var thisBannerObj = this.obj;
    // CURRENT BANNER IS ALREADY INCREMENTED IN cahngeBanner() FUNCTION
    setTimeout(thisBannerObj+".start()", this.aNodes[this.currentBanner].bannerDuration * 1000);
}

// CHANGE BANNER
Banner.prototype.changeBanner = function(){
    var thisBanner;
    var prevBanner = -1;
    if (this.currentBanner < this.aNodes.length ){
        thisBanner = this.currentBanner;
        if (this.aNodes.length > 1){
            if ( thisBanner > 0 ){
                prevBanner = thisBanner - 1;
            }else{
                prevBanner = this.aNodes.length-1;
            }
        }
        if (this.currentBanner < this.aNodes.length - 1){
            this.currentBanner = this.currentBanner + 1;
        }else{
            this.currentBanner = 0;
        }
    }
    
    
    if (prevBanner >= 0){
        document.getElementById(this.aNodes[prevBanner].name).className = "m_banner_hide";
    }
    
    document.getElementById(this.aNodes[thisBanner].name).className = "m_banner_show";


}

Banner.prototype.addCaption = function ( oImgElem, bUseCaptionMarker ) {
  // Insert Caption
  var oCaptionElem = document.createElement("div");
  oCaptionElem.className = "caption";

  if( bUseCaptionMarker) {
    var oCaptionMarkerElem = document.createElement("div");
    oCaptionMarkerElem.className = "caption-marker";
    var oCaptionMarkerTextElem = document.createTextNode("\u00bb");
    oCaptionMarkerElem.appendChild(oCaptionMarkerTextElem);
    oCaptionElem.appendChild(oCaptionMarkerElem );
  }

  var oCaptionTextElem = document.createElement("div");
  oCaptionTextElem.className = "caption-text";
  var oCaptionText = document.createTextNode( oImgElem.alt );
  oCaptionTextElem.appendChild(oCaptionText );
  oCaptionElem.appendChild(oCaptionTextElem);

  if( oImgElem.getAttribute("copyright") != null )
  {
    var oCopyrightElem = document.createElement("div");
    oCopyrightElem.className = "copyright";
    var oCopyrightText = document.createTextNode( 
      oImgElem.getAttribute("copyright") );
    oCopyrightElem.appendChild(oCopyrightText);
    oCaptionElem.appendChild(oCopyrightElem );
  }

  if(oImgElem.nextSibling) 
    oImgElem.parentNode.insertBefore(oCaptionElem,
      oImgElem.nextSibling);
  else
    oImgElem.parentNode.appendChild(oCaptionElem);

  with(oImgElem.style)
  {
    oCaptionElem.style.width = (oImgElem.width+borderLeft+
      borderRight+paddingLeft+paddingRight)+"px";
  }

  return true; 
}