function hover(imgName) {
	
    document.images[imgName].src = 'http://www.cmb-verdeyen.be/assets/menu/' + imgName.replace("menu_","") +'_hover.gif';
	
}
function unhover(imgName) {
	
    document.images[imgName].src = 'http://www.cmb-verdeyen.be/assets/menu/' + imgName.replace("menu_","") +'.gif';
	
}