// define browser version
var browserVersion = parseInt (navigator.appVersion);

// preload images
function imgPreload (path) {
	if (browserVersion > 2) {
		imgHome = new Image();
		imgHome.src = path + 'link-home.gif';
		imgHomeOver = new Image();
		imgHomeOver.src = path + 'link-home-a.gif';
		imgHomeAct = new Image();
		imgHomeAct.src = path + 'link-home-b.gif';

		imgCompany = new Image();
		imgCompany.src = path + 'link-company.gif';
		imgCompanyOver = new Image();
		imgCompanyOver.src = path + 'link-company-a.gif';
		imgCompanyAct = new Image();
		imgCompanyAct.src = path + 'link-company-b.gif';

		imgPartnership = new Image();
		imgPartnership.src = path + 'link-partnership.gif';
		imgPartnershipOver = new Image();
		imgPartnershipOver.src = path + 'link-partnership-a.gif';
		imgPartnershipAct = new Image();
		imgPartnershipAct.src = path + 'link-partnership-b.gif';

		imgContacts = new Image();
		imgContacts.src = path + 'link-contacts.gif';
		imgContactsOver = new Image();
		imgContactsOver.src = path + 'link-contacts-a.gif';
		imgContactsAct = new Image();
		imgContactsAct.src = path + 'link-contacts-b.gif';

		imgMap = new Image();
		imgMap.src = path + 'link-map.gif';
		imgMapOver = new Image();
		imgMapOver.src = path + 'link-map-a.gif';
		imgMapAct = new Image();
		imgMapAct.src = path + 'link-map-b.gif';
	}
	return true;
}

// rollover image
function imgLoad (nameTarget, imgName) {
	if (browserVersion > 2) {
		if (document.images) {
			document[nameTarget].src = imgName;
		}
	}
	return true;
}

// variate header image
var numberImages = 5;
var imgNumber;

if (browserVersion > 2)	{
	imgNumber = Math.ceil (Math.random() * numberImages);
		
	if (document.images) {
		imgHeader = new Image();
		eval ("imgHeader.src = 'img/design/header-pic" + imgNumber + ".jpg'");
	}
}