var img, maks, pointer;
img = new Array();


function imgStore(ms) {
	var i;
	maks = ms;
	pointer = 1;
	for (i=1; i <= maks ; i++) {
		img[i] = new Image();
		img[i].src = "./folien/f"+i+".jpg";
	}
		
}


function vor(){
	pointer++;
	if (pointer>maks) pointer=1;
	document.folien.src="./folien/f"+pointer+".jpg";
}

function zurueck(){
	pointer--;
	if (pointer<1) pointer = maks;
	document.folien.src="./folien/f"+pointer+".jpg";
}