var first = "true";
var pickey = 0;
var mainchange = 1;

function numcheck() {
	if ((picarray.length - 1) > pickey) pickey++;
	else pickey = 0;
}

function change() {
	
	if(first == "true"){
		$('pic1').src=picarray[0];
		first="false";
		newchange();
		

	}else{
		numcheck();
		
		if (mainchange == 1) {
			$('pic2').set('opacity',0);
			$('pic2').src=picarray[pickey];
			
			
			var myFx1 = new Fx.Tween('pic1', {duration: 5000}); 
	
			myFx1.start('opacity','1','0');
				
			
			var myFx2 = new Fx.Tween('pic2', {duration: 5000,onComplete:function(){newchange();}}); 
		
			myFx2.start('opacity','0','1');
			
			
			mainchange = 2;
		} else {
			
			$('pic1').set('opacity',0);
			$('pic1').src=picarray[pickey];
			
			
			var myFx3 = new Fx.Tween('pic2', {duration: 5000}); 
	
			myFx3.start('opacity','1','0');
				
			
			var myFx4 = new Fx.Tween('pic1', {duration: 5000,onComplete:function(){newchange();}}); 
		
			myFx4.start('opacity','0','1');
			
		
			mainchange = 1;
		}
		
	}
}




function newchange() {
	
	setTimeout(change, 4000);
}