var zoomDefault = new Image().src = "../img/zoom/zoomLevel.gif";
var zoomChosen = new Image().src = "../img/zoom/zoomLevelChosen.gif";
var numSave = 8;
var url = "../img/map/MQMap";

function map_init()
{
	var mapScr = document.images["map"].src;
	url = url.substring(0, (url.length));
	//alert(url);
}
function map_trimString(str)
{
	if (!(str == "")) {
		while(('' + str.charAt(0) == ' ') || ('' + str.charAt(0) == '{')) {
			str = str.substring(1,str.length);
		}
	}
	// take out trailing spaces
	if (!(str == "")) {
		while ((str.charAt(str.length - 1) == ' ') || (str.charAt(str.length - 1) == '}')){
	    	str = str.substring(0, str.length - 1);
		}
	}
	return str;
}
function map_clearLevel()
{
	document.images["one"].src 		= zoomDefault;
   	document.images["two"].src		= zoomDefault;
   	document.images["three"].src 	= zoomDefault;
   	document.images["four"].src 	= zoomDefault;
   	document.images["five"].src		= zoomDefault;
   	document.images["six"].src 		= zoomDefault;
   	document.images["seven"].src 	= zoomDefault;
   	document.images["eight"].src	= zoomDefault;
   	document.images["nine"].src 	= zoomDefault;
}
function map_doLevel()
{
	switch (numSave) {
		case (0):
			document.images["one"].src 		= zoomChosen;
			break;
		case (1):
			document.images["one"].src 		= zoomChosen;
			break;
		case (2):
			document.images["two"].src		= zoomChosen;
			break;
		case (3):
			document.images["three"].src 	= zoomChosen;
			break;
		case (4):
			document.images["four"].src 	= zoomChosen;
			break;
		case (5):
			document.images["five"].src		= zoomChosen;
			break;
		case (6):
			document.images["six"].src 		= zoomChosen;
			break;
		case (7):
			document.images["seven"].src 	= zoomChosen;
			break;
		case (8):
			document.images["eight"].src	= zoomChosen;
			break;
		case (9):
			document.images["nine"].src 	= zoomChosen;
			break;
	}
}
function map_doZoom(num, str) 
{
	//alert("welcome");
	if (num == 11) {
		if (numSave < 9) {
			numSave += 1;
		} else {
			numSave = 9;
		}
	} else if (num == 0) {
		if (numSave > 0) {
			numSave = numSave - 1;
		} else {
			numSave = 0;
		}
	} else {
		numSave = num;
	}
	//alert( url + numSave + ".gif");
	document.images["map"].src = "../img/map/MQMap" + numSave + ".gif";
	map_clearLevel();
	map_doLevel();
}