function goSpanish() {
		file=location.pathname.substring(location.pathname.lastIndexOf('/')+1);
		file=file.substring(0,file.indexOf("."));
		if (file.length<=1) {file="index"}
		location.href=file+"-span.shtml"
	}
	
	// preload images - you have to specify which images should be preloaded
	// and which Image-object on the wep-page they belong to (this is the first
	// argument). Change this part if you want to use different images (of course
	// you have to change the body part of the document as well)
	preload("btn1", "assets/nav_btns/espanol.gif", "assets/nav_btns/espanolg.gif");
	preload("btn2", "assets/nav_btns/home.gif", "assets/nav_btns/homeg.gif");
	preload("btn3", "assets/nav_btns/about.gif", "assets/nav_btns/aboutg.gif");
	preload("btn4", "assets/nav_btns/contact.gif", "assets/nav_btns/contactg.gif");
	preload("btn5", "assets/nav_btns/products.gif", "assets/nav_btns/productsg.gif");
	preload("btn6", "assets/nav_btns/map.gif", "assets/nav_btns/mapg.gif");