function vignetteUp(id_down,id_up,id_text,vpos_down,vpos_up){
	//alert(vpos_up);
	im_down=document.getElementById(id_down);
	im_up=document.getElementById(id_up);
	img=im_down.src;
	im_down.src=im_up.src;
	im_up.src=img;
	im_text=document.getElementById(id_text);
	if(im_text){
		im_text.style.top=im_text.style.top== vpos_down ? vpos_up : vpos_down;
	}
}