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) {
		Home_over = newImage("images/button-home_on.gif");
		About_over = newImage("images/button-about_on.gif");
		Why_over = newImage("images/button-why_on.gif");
		Tools_over = newImage("images/button-tools_on.gif");
		Consulting_over = newImage("images/button-consulting_on.gif");
		Contact_over = newImage("images/button-contact_on.gif");
		preloadFlag = true;
	}
}

function WinOpen(url,x,y) 
{
	var options = "toolbar=no,scrollbars=yes,resizable=yes,width=" + x + ",height=" + y;
	msgWindow=window.open(url,"WinOpen",options);
}