var bannerjson;


function loadBannerJsonDoc(){

    new Ajax.Request("resource/videobannerrotation.js", {
        method: 'get',
        onSuccess: function(transport){
			
            bannerjson = transport.responseText.evalJSON();
           
		  displayBanner();
        }
    });
}



function randOrd(){
    return (Math.round(Math.random()) - 0.4);
}



															 
function displayBanner() {
	
	var elements;
    
        elements = bannerjson.gal;
    
       
    
    
    var imagecount = elements.length;
    var banner = null;
    var bannerurl = null;
    var gals = new Array();
    
	
    
    
    for (var i = 0; i <= imagecount - 1; i++) {
        base = elements[i];
        try {
            banner = base.banner;
			
        } 
        catch (e) {
            banner = ""
        }
        try {
            bannerurl = base.bannerurl;
			
        } 
        catch (e) {
            bannerurl = ""
        }
        
        gals[i] = new Array("banner", "bannerurl");
        gals[i]["banner"] = banner;
        gals[i]["bannerurl"] = bannerurl;
        
    }
    
    gals.sort(randOrd);
	
 		//document.write('<a href=\'' + gals[0]["bannerurl"]+'\' title=\''+gals[0]["banner"]+'\' target=\'_blank\'><img border=0 src=\'' + gals[0]["banner"] + '\' alt=\'' + gals[0]["banner"] + '\'></a>');
		document.getElementById("bannerimage1").src = gals[0]["banner"];
         document.getElementById("bannerurl1").href = gals[0]["bannerurl"];
	
}