//bildwechsel
function img_on(name) {
   document.images[name].src="../images/i_"+name+"_mo.gif";
} 
  
function img_off(name) {
   document.images[name].src="../images/i_"+name+"_na.gif";
}

function himg_on(name) {
   document.images[name].src="images/i_"+name+"_mo.gif";
} 
  
function himg_off(name) {
   document.images[name].src="images/i_"+name+"_na.gif";
}

function sub_img_on(name) {
   document.images[name].src="../images/sub/n_"+name+"_mo.gif";
} 
  
function sub_img_off(name) {
   document.images[name].src="../images/sub/n_"+name+"_na.gif";
}