/////////////////////////////////
// File Name: mBanner.js       //
// Version: 2.1                  //
// By: Manish Kumar Namdeo     //
// http://www.mysticalm.com    //
/////////////////////////////////

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

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

// Node object
function Node(name, bannerType, bannerPath, bannerDuration, height, width, hyperlink, target) {
   this.name = name;
   this.bannerType = bannerType;
   this.bannerPath = bannerPath;
   this.bannerDuration = bannerDuration;
   this.height = height
   this.width = width;
   this.hyperlink= hyperlink;
   this.target= target;
};

// Outputs the banner to the page
Banner.prototype.toString = function() {
   var str = "";
   var iBannerIndex = 0;
   if(this.changeOnRefresh == true){
      // Read the cookie
      var BannerName = this.obj;
      var lastBannerIndex = readCookie(BannerName);

      if(isNaN(lastBannerIndex) == true || lastBannerIndex == null){
         iBannerIndex = 0;
      }else if(lastBannerIndex == '' || parseInt(lastBannerIndex) >= this.aNodes.length - 1){
         iBannerIndex = 0;
      }else{
         iBannerIndex = parseInt(lastBannerIndex) + 1;
      }
   
      // Set the new value
      createCookie(BannerName,iBannerIndex,7);
   }

   for (var iCtr=0; iCtr < this.aNodes.length; iCtr++){
      if(this.changeOnRefresh == true && iBannerIndex != iCtr){
         continue;
      }
      str = str + '<span name="'+this.aNodes[iCtr].name+'" '
      str = str + 'id="'+this.aNodes[iCtr].name+'" ';
      if(this.changeOnRefresh == true && iBannerIndex == iCtr){
         str = str + 'class="m_banner_show" ';
      }else{
         str = str + 'class="m_banner_hide" ';
      }
      str = str + 'bgcolor="#FFFCDA" ';   // CHANGE BANNER COLOR HERE
      str = str + 'align="center" ';
      str = str + 'valign="top" >\n';
         
      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>';
         if (this.aNodes[iCtr].hyperlink != ""){
            str = str + '<PARAM NAME=flashvars VALUE="clickTag='+this.aNodes[iCtr].hyperlink;
            if(this.aNodes[iCtr].target != ""){
               str = str + '&clickTarget='+this.aNodes[iCtr].target;
            }
            str = str + '" />';
         }
         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" ';
         if (this.aNodes[iCtr].hyperlink != ""){
            str = str + 'FLASHVARS="clickTag='+this.aNodes[iCtr].hyperlink;
            if(this.aNodes[iCtr].target != ""){
               str = str + '&clickTarget='+this.aNodes[iCtr].target;
            }
            str = str + '" ';
         }
         
         str = str + '>';
         str = str + '</EMBED>'
         str = str + '</OBJECT>'
      }else if ( this.aNodes[iCtr].bannerType == "IMAGE" ){
         if (this.aNodes[iCtr].hyperlink != ""){
            str = str + '<a href="'+this.aNodes[iCtr].hyperlink+'" '
            if(this.aNodes[iCtr].target != ""){
               str = str + ' target="' + this.aNodes[iCtr].target + '" ';
            }
            str = str + '>';
         }
         str = str + '<img src="'+this.aNodes[iCtr].bannerPath+'" ';
         str = str + 'border="0" ';
         str = str + 'height="'+this.aNodes[iCtr].height+'" ';
         str = str + 'width="'+this.aNodes[iCtr].width+'">';
         if (this.aNodes[iCtr].hyperlink != ""){
            str = str + '</a>';
         }
      }


      str += '</span>';


   }
   return str;
};

// START THE BANNER ROTATION
Banner.prototype.start = function(){
   if(this.changeOnRefresh == false){
      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";
}

// Following Cookie Code taken from http://www.quirksmode.org
function createCookie(name,value,days) {
   if (days) {
      var date = new Date();
      date.setTime(date.getTime()+(days*24*60*60*1000));
      var expires = "; expires="+date.toGMTString();
   }
   else var expires = "";
   document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
   var nameEQ = name + "=";
   var ca = document.cookie.split(';');
   for(var i=0;i < ca.length;i++) {
      var c = ca[i];
      while (c.charAt(0)==' ') c = c.substring(1,c.length);
      if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
   }
   return null;
}