NewImg = new Array();
for (i=1;i<=21;i++) {
  NewImg[i] = "images/rol"+i+".jpg";
}

var ImgNum = 0;
var ImgLength = NewImg.length - 1;

//Time delay between Slides in milliseconds
var delay = 3000;

var lock = false;
var run;

function chgImg(direction) {
	if (document.images) {
		ImgNum = ImgNum + direction;
		if (ImgNum > ImgLength) {
			ImgNum = 0;
		}
		if (ImgNum < 0) {
			ImgNum = ImgLength;
		}
		document.slideshow.src = NewImg[ImgNum];
	}
}

function auto() {
	if (lock == true) {
		lock = false;
		window.clearInterval(run);
	}
	else if (lock == false) {
		lock = true;
		run = setInterval("chgImg(1)", delay);
	}
}

function zamenjajsl(novaslika) {
  if (document.kartica.src != novaslika) document.kartica.src= novaslika;
}

function barva(id){
if((navigator.appName.indexOf("Microsoft")>-1) || (navigator.appName.indexOf("MSIE")>-1)){
	if(document.getElementById(id).style.backgroundColor == "#006633") {
	  document.getElementById(id).style.backgroundColor="#BBE8A5";
	  document.getElementById(id).style.color="#006633";
	} else {
	  document.getElementById(id).style.backgroundColor="#006633";
	  	  document.getElementById(id).style.color="#FFFFFF";
	}
}
}