var header_imgs = new Array();
var header_time = 4000;
var header_which = true;

function changeHeaderImg(num) {

				//alert(num);

                var one = $('changingheaderimg');
                var two = $('changingheaderimg2');                

                if (header_which) {
                        
                        one.setStyle('background-image', 'url(' + header_imgs[num].src + ')');
                        
                        var fx = new Fx.Tween(two,{
                                duration: 1000,
                                onComplete: function(){ 
                                        two.fade('out');
                                }
                        });
                        fx.start('opacity',1,0);
                        
                } else {
                        
                        two.setStyle('background-image', 'url(' + header_imgs[num].src + ')');
                        
                        var fx = new Fx.Tween(two,{
                                duration: 1000,
                                onComplete: function(){ 
                                        two.fade('in');
                                }
                        });
                        fx.start('opacity',0,1);
                        
                }
                
                
                if (num+1 == header_imgs.length) {
                        num = 0;
                } else {
                        num = num + 1;
                }
                        
                header_which = !header_which;
                setTimeout( "changeHeaderImg("+num+")",header_time);
                
}

window.addEvent('domready', function() {
        
        //header_imgs = document.getElementsByClassName('headerimgcandidate');
        header_imgs = $('changingheaderimg2').getElements('.headerimgcandidate');
        
        //for (var i=0;i<header_imgs.length;i++)
        	//alert(header_imgs[i].src);
        
        if (header_imgs.length > 1) {
                setTimeout( "changeHeaderImg(1)",header_time);
                
        }
        
});