var N = 6;
var pos = 0;
var dt = 5000;
pic1 = new Image();


function umschalt()
{
	window.setTimeout( "umschalt()", dt );

	if( !document.images.dia || !document.images.dia.complete )
	{		
		return;
	}

	if( pos < N )
		pos++;
	else
		pos=1;

	if( document.images.dia.filters )
		document.images.dia.filters.blendTrans.apply();

	var nr = pos;

	document.images.dia.src="img/dia/"+nr+".jpg";

	if( document.images.dia.filters )
		document.images.dia.filters.blendTrans.play();



	pic1.src= "img/dia/" + (nr+1) + ".jpg";	
}


window.setTimeout( "umschalt()", dt/32 );