function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		header_02_home_over = newImage("../images/header_02-home_over.gif");
		header_02_language_over = newImage("../images/header_02-language_over.gif");
		header_02_urgency_over = newImage("../images/header_02-urgency_over.gif");
		header_02_culture_over = newImage("../images/header_02-culture_over.gif");
		header_02_documentation_over = newImage("../images/header_02-documentation_ove.gif");
		header_02_analysis_over = newImage("../images/header_02-analysis_over.gif");
		header_02_media_over = newImage("../images/header_02-media_over.gif");
		header_02_volkswagon_over = newImage("../images/header_02-volkswagon_over.gif");
		header_02_contacts_over = newImage("../images/header_02-contacts_over.gif");
		preloadFlag = true;
	}
}

function Show(Div){

	var El = document.getElementById(Div);

	if (El.style.display != 'none'){
		El.style.display = 'none';
	}
	else{
		El.style.display = 'block';
	}
}