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

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

function changeImages() {
	changeImagesArray(changeImages.arguments);
}

function toggleImages() {
	for (var i=0; i<toggleImages.arguments.length; i+=2) {
		if (selected == toggleImages.arguments[i])      changeImagesArray(toggleImages.arguments[i+1]);
	}
}

var selected = '';
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/home-over.gif");
		about_over = newImage("images/about-over.gif");
		capabilities_over = newImage("images/capabilities-over.gif");
		team_over = newImage("images/team-over.gif");
		work_over = newImage("images/work-over.gif");
		thinking_over = newImage("images/thinking-over.gif");
		news_over = newImage("images/news-over.gif");
		contact_over = newImage("images/contact-over.gif");
		
		thinking_A_01_over = newImage("images/thinking_A_01-over.gif");
		thinking_B_01_over = newImage("images/thinking_B_01-over.gif");
		thinking_C_01_over = newImage("images/thinking_C_01-over.gif");
		preloadFlag = true;
	}
}