/////////////////////////////////
// File Name: mBanner.js       //
// By: Manish Kumar Namdeo     //
/////////////////////////////////

// BANNER OBJECT
function Banner(objName){
    var rnum = 0;
    this.doRandom = 1;
    this.obj = objName;
    this.aNodes = [];
    this.currentBanner = 0;
};

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

// Node object
function Node(name, bannerType, bannerPath, bannerDuration, height, width, hyperlink, alt, chcksrc, weight) {
    this.name = name;
    this.bannerType = bannerType;
    this.bannerPath = bannerPath;
    this.bannerDuration = bannerDuration;
    this.height = height;
    this.width = width;
    this.hyperlink = hyperlink;
    this.alt = alt;
    this.chcksrc = chcksrc;
    this.weight = weight;

    //    var tweig += weight;
    //    alert(tweig);
    //	alert (name +"|" + bannerType +"|" + bannerPath +"|" + bannerDuration +"|" + height +"|" + width + "|" + hyperlink);
};

// Outputs the banner to the page
Banner.prototype.toString = function() {
    var str = ""
    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="#000000" ';	// CHANGE BANNER COLOR HERE
	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 == "HTML" ){
	    str = str + '<img src="'+this.aNodes[iCtr].bannerPath+'" ';
	    str = str + 'border="0" ';
	    str = str + 'alt="'+this.aNodes[iCtr].alt+'" ';
	    str = str + 'height="'+this.aNodes[iCtr].height+'" ';
	    str = str + 'width="'+this.aNodes[iCtr].width+'">';
	
	}else if ( this.aNodes[iCtr].bannerType == "IMAGE" ){
	    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>';
	}
	if (this.aNodes[iCtr].chcksrc != ""){
	    str = str + '<img src="'+this.aNodes[iCtr].chcksrc+'" ';
	    str = str + 'border="0" ';
	    str = str + 'height="1" ';
	    str = str + 'width="1">';
	}
	
	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;

    // Randomize start
    if (this.doRandom > 0) {
	this.currentBanner = Math.floor(Math.random() * (this.aNodes.length));
	this.doRandom = 0;
    }

    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";
}