/**
 * ivw Manager
 * @author netTrek - Saban Uenlue
 */

var oldTriggeredID = -1;
var oldTag = "";
var 	ivwtags = new Array();

function trim (str) 
{
	if(str == undefined || str == null ) 
		return str;	
	return str.replace( /^\s*/, '' ).replace( /\s*$/, '' );
}

function triggerIVWTag ( tag, allowMultiple ) 
{
	tag = trim (tag);
	if ( tag != undefined && tag != null && tag.length > 0 && (tag != oldTag || allowMultiple) )
	{
		if(document.getElementById("ivwtag"))
	  	{
			oldTag = tag;
	    	var ivwrnd = Math.round(Math.random() * 100000);
	    	newivwtag = "<img src=\"http://wdr.ivwbox.de/cgi-bin/ivw/CP/;www.wdr.de/radio/audioplayer/" 
	    					+ tag 
	    					+ "?r=" + escape(document.referrer)
	    					+ "&d=" + ivwrnd 
	    					+ "\" alt=\"szmtag\" height=\"1\" width=\"1\">";
	    	//alert ( newivwtag );
	    	document.getElementById("ivwtag").innerHTML = newivwtag;
	    	return true;
	    }
	}
	return false;
}