// JavaScript Document

function showPic (whichpic) {
    if (document.getElementById) {
      document.getElementById('placeholder').src = whichpic.href;
      return false;
     } else {
      return true;
     }
    }
    
    function setSelf(x){
 for (k=0; k<=20; k++) { 
 var classfoto = "foto" + k;
   if(document.getElementById(classfoto)){
        document.getElementById(classfoto).className='noself';
    }
 }
    if(document.getElementById(x)){
        document.getElementById(x).className='self';
    }
}