var imgCounter = 0;
var imgCount = 0;
var isMSIE = (navigator.appName == "Microsoft Internet Explorer");
var isOPERA = (navigator.appName == "Opera");
var divId = null;

function preLoad_addEvent(obj, name, handler) {
	if ( (isMSIE) || (isOPERA) ) {
		obj.attachEvent("on" + name, handler);
	} else {
		obj.addEventListener(name, handler, false);
	}
}

function preLoad_ImageOk() {
	imgCounter--;
	if (imgCounter==0) {
		document.getElementById(divId).innerHTML = "";
	} else {
		document.getElementById(divId).innerHTML = "<center><b>Loading... ("+Math.round(((imgCount-imgCounter)/imgCount)*100)+"%)</b></center>";
	}
}

function preLoad(div_id) {
	document.getElementById(div_id).innerHTML = "<center><b>Loading...</b></center>";

	imgCounter++;
	img1=new Image();
	img1.src = "./images/nyito_2_kek_magyar_2x2.jpg";
	preLoad_addEvent(img1,"load",preLoad_ImageOk);

	imgCounter++;
	img2=new Image();
	img2.src = "./images/nyito_1_kek_angol_2x2.jpg";
	preLoad_addEvent(img2,"load",preLoad_ImageOk);

	imgCounter++;
	img3=new Image();
	img3.src = "./images/nyito_3_kek_nemet_2x2.jpg";
	preLoad_addEvent(img3,"load",preLoad_ImageOk);

	imgCounter++;
	img4=new Image();
	img4.src = "./images/nyito_fekete_alap_kep_2x2.jpg";
	preLoad_addEvent(img4,"load",preLoad_ImageOk);
	divId = div_id;

	imgCount = imgCounter;
}