var flagPopup = false;
var strPopup = '';

function newImage(arg){
	rslt = new Image();
	rslt.src = arg;
	return rslt;
}
function changeImages(img_name, img_citymap){
	if (document.images && (preloadFlag == true)){
		document[img_name].src = img_citymap;
	}
}
function preloadImages(){
	if (document.images){
		img_worldmap_01_over = newImage("img/img-worldmap01.gif");
		img_worldmap_02_over = newImage("img/img-worldmap02.gif");
		img_worldmap_03_over = newImage("img/img-worldmap03.gif");
		img_worldmap_04_over = newImage("img/img-worldmap04.gif");
		img_worldmap_05_over = newImage("img/img-worldmap05.gif");
		img_worldmap_06_over = newImage("img/img-worldmap06.gif");
		img_worldmap_07_over = newImage("img/img-worldmap07.gif");
		img_worldmap_08_over = newImage("img/img-worldmap08.gif");
		img_worldmap_09_over = newImage("img/img-worldmap09.gif");
		img_worldmap_10_over = newImage("img/img-worldmap10.gif");
		img_worldmap_11_over = newImage("img/img-worldmap11.gif");
		img_worldmap_12_over = newImage("img/img-worldmap12.gif");
		img_worldmap_13_over = newImage("img/img-worldmap13.gif");
		img_worldmap_14_over = newImage("img/img-worldmap14.gif");
		img_worldmap_15_over = newImage("img/img-worldmap15.gif");
		img_worldmap_16_over = newImage("img/img-worldmap16.gif");
		img_worldmap_17_over = newImage("img/img-worldmap17.gif");
		img_worldmap_18_over = newImage("img/img-worldmap18.gif");
		img_worldmap_19_over = newImage("img/img-worldmap19.gif");
		img_worldmap_20_over = newImage("img/img-worldmap20.gif");
		preloadFlag = true;
	}
}
function showPopup(num, posX, posY){
	if (flagPopup){
		hidePopup();
	}
	var v_id = 'cmpopup'+num;
	document.getElementById(v_id).style.left = posX - 326 + "px";
	document.getElementById(v_id).style.top = posY + "px";
	document.getElementById(v_id).style.display = 'block';
	flagPopup = true;
	strPopup = v_id;
}
function hidePopup(){
	if (flagPopup){
		document.getElementById(strPopup).style.display = 'none';
		flagPopup = false;
		strPopup = '';
	}
}