/***********************************
 * 
 * basic GUI functions by erational 
 *
 *  licence: GPL
 *  version: 0.2
 *  date:    2008.01.07   

 ***********************************§       

/* global parameter */
url_skel = "./skel/";

/* simple rollover */
function mo(item)   {  if (document.images) document.images[item].src = url_skel + "img/"+item+"_over.png";}
function mor(item)  {  if (document.images) document.images[item].src = url_skel + "img/"+item+".png";}

/* simple rollover */
function omo(item,img_over)   {  if (document.images) document.images[item].src = img_over;}

/* complex rollover */
function mp(item,id_img)   {  if (document.images) document.images[item].src = img_url_on[id_img];}
function mpr(item,id_img)   {  if (document.images) document.images[item].src = img_url_over[id_img];}