var activePage = "welkom";

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

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

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

var preloadFlag = true;
function preloadImages() {
	if (document.images) {
		a = newImage("images/tile.gif");
		b = newImage("images/tile_flexatec.gif");
		c = newImage("images/tile_maxatec.gif");
		d = newImage("images/tile_megatec.gif");
		e = newImage("images/tile_micratec.gif");
		f = newImage("images/transpixel.gif");
		g = newImage("images/nav_home_n.jpg");
		h = newImage("images/nav_maxatec_h.jpg");
		i = newImage("images/nav_maxatec_n.jpg");
		j = newImage("images/nav_megatec_h.jpg");
		k = newImage("images/nav_megatec_n.jpg");
		l = newImage("images/nav_micratec_h.jpg");
		m = newImage("images/nav_micratec_n.jpg");
		n = newImage("images/nav_techniek_h.jpg");
		o = newImage("images/nav_techniek_n.jpg");
		p = newImage("images/icon_pdf.gif");
		q = newImage("images/icon_pdf_blue.gif");
		r = newImage("images/icon_pdf_green.gif");
		s = newImage("images/icon_pdf_grey.gif");
		t = newImage("images/icon_pdf_yellow.gif");
		u = newImage("images/nav_alumatec_h.jpg");
		v = newImage("images/nav_contact_h.gif");
		w = newImage("images/nav_contact_n.gif");
		x = newImage("images/nav_curatec_h.jpg");
		y = newImage("images/nav_flexatec_h.jpg");
		z = newImage("images/nav_flexatec_n.jpg");
		aa = newImage("images/background.gif");
		bb = newImage("images/background_flexatec.gif");
		cc = newImage("images/background_maxatec.gif");
		dd = newImage("images/background_megatec.gif");
		ee = newImage("images/background_micratec.gif");
		ff = newImage("images/copyright.gif");
		gg = newImage("images/copyright.jpg");
		hh = newImage("images/copyright_flexatec.gif");
		ii = newImage("images/copyright_maxatec.gif");
		jj = newImage("images/copyright_megatec.gif");
		kk = newImage("images/copyright_micratec.gif");
		ll = newImage("images/payoff.gif");
		mm = newImage("images/dot.gif");
		nn = newImage("images/beweging_1.gif");
		oo = newImage("images/beweging_2.gif");
		pp = newImage("images/beweging_3.gif");
		qq = newImage("images/beweging_4.gif");
		rr = newImage("images/beweging_5.gif");
		ss = newImage("images/beweging_6.gif");
		tt = newImage("images/beweging_7.gif");
		uu = newImage("images/beweging_8.gif");
		vv = newImage("images/brochure_flexatec.jpg");
		ww = newImage("images/brochure_maxatec.jpg");
		xx = newImage("images/brochure_megatec.jpg");
		yy = newImage("images/brochure_micratec.jpg");
		zz = newImage("images/brochure_techniek.jpg");
		aaa = newImage("images/content_maxatec.jpg");
		bbb = newImage("images/flexatec2.jpg");
		ccc = newImage("images/home_maxatec.gif");
		ddd = newImage("images/home_flexatec.gif");
		eee = newImage("images/home_megatec.gif");
		fff = newImage("images/home_micratec.gif");
		gg = newImage("images/home_techniek.gif");

		bbb= newImage("images/route_kaart1.jpg");
		ccc= newImage("images/route_kaart2.jpg");
		ddd= newImage("images/route_kaart3.jpg");
		eee= newImage("images/route_thumbs.jpg");
		lll= newImage("images/verzenden2_h.gif");
		mmm= newImage("images/verzenden2_n.gif");
		nnn= newImage("images/verzenden_n.gif");
		ooo= newImage("images/verzenden_n.gif");


		preloadFlag = true;
	}
}

function setActivePageFrame(name) { 
	if (document.images) { 
        	changeImagesFrame(name, eval("'menu_" + activePage + "'"), eval("'images/Buttons/" + activePage + ".gif'"));
        	changeImagesFrame(name, eval("'menu_" + name + "'"), eval("'images/Buttons/" + name + "Roll.gif'"));
        	parent.buttons.activePage = name;
	} 
}

function setActivePage(name) { 
	if (document.images) { 
        	changeImages(name, eval("'menu_" + activePage + "'"), eval("'images/Buttons/" + activePage + ".gif'"));
        	changeImages(name, eval("'menu_" + name + "'"), eval("'images/Buttons/" + name + "Roll.gif'"));
        	activePage = name;
	} 
}