var mapNumber = 1;

if (document.images) {
	aboutus_off = new Image();
	aboutus_off.src = "images/aboutus1.png";
	aboutus_on = new Image();
	aboutus_on.src = "images/aboutus2.png";
	technology_off = new Image();
	technology_off.src = "images/technology1.png";
	technology_on = new Image();
	technology_on.src = "images/technology2.png";
	services_off = new Image();
	services_off.src = "images/services1.png";
	services_on = new Image();
	services_on.src = "images/services2.png";
	products_off = new Image();
	products_off.src = "images/products1.png";
	products_on = new Image();
	products_on.src = "images/products2.png";
	contact_off = new Image();
	contact_off.src = "images/contact1.png";
	contact_on = new Image();
	contact_on.src = "images/contact2.png";
	links_off = new Image();
	links_off.src = "images/links1.png";
	links_on = new Image();
	links_on.src = "images/links2.png";
	pallukka_off = new Image();
	pallukka_off.src = "images/pallukka1.png";
	pallukka_on = new Image();
	pallukka_on.src = "images/pallukka2.png";
	
	map_1 = new Image();
	map_1.src = "images/map1.jpg";
	map_2 = new Image();
	map_2.src = "images/map2.jpg";
	map_3 = new Image();
	map_3.src = "images/map3.jpg";
	
	neoxid_off = new Image();
	neoxid_off.src = "images/indexpicture1.jpg";
	neoxid_on = new Image();
	neoxid_on.src = "images/indexpicture1_on.jpg";
	polymers_off = new Image();
	polymers_off.src = "images/indexpicture2.jpg";
	polymers_on = new Image();
	polymers_on.src = "images/indexpicture2_on.jpg";
	solgel_off = new Image();
	solgel_off.src = "images/indexpicture3.jpg";
	solgel_on = new Image();
	solgel_on.src = "images/indexpicture3_on.jpg";
	process_off = new Image();
	process_off.src = "images/indexpicture4.jpg";
	process_on = new Image();
	process_on.src = "images/indexpicture4_on.jpg";	

}

function naviOn(imgName) {
if (document.images)
document[imgName].src = eval(imgName + '_on.src');
}

function naviOff(imgName) {
if (document.images)
document[imgName].src = eval(imgName + '_off.src');
}

function changeMap(zoomIn) {
if (document.images)
	if (zoomIn){
		mapNumber = mapNumber + 1;
	} else {
		mapNumber = mapNumber - 1;
	}
	
	document['mappicture'].src = eval('map_' + mapNumber + '.src');
	var zoomOutText = document.getElementById('zoomOutText');
	if (mapNumber > 1){	
 		zoomOutText.style.display = 'block';
	} else {
		zoomOutText.style.display = 'none';
	}
	if (mapNumber < 3){	
		zoomInText.style.display = 'block';
	} else {
		zoomInText.style.display = 'none';
	}
	
	if (mapNumber == 1){
		document.getElementById('pallukka').style.display = 'block';
		document.getElementById('pallukka').style.top = '250px';
		document.getElementById('pallukka').style.left = '348px';
	} else if (mapNumber == 2){
		document.getElementById('pallukka').style.display = 'block';
		document.getElementById('pallukka').style.top = '243px';
		document.getElementById('pallukka').style.left = '333px';
	} else if (mapNumber == 3){
		document.getElementById('pallukka').style.display = 'none';
	}

}