function show(id){
    var el=document.getElementById(id);
    el.style.display = (el.style.display == 'block')?'none':'block';
}

function relPosX(which){
 if(document.getElementById){
   var elem = document.getElementById(which); 
   var pos = elem.offsetLeft;
   while(elem.offsetParent != null){
      elem = elem.offsetParent;
      pos += elem.offsetLeft;
      if(elem.tagName == 'BODY') break;
   } 
 }
return pos;
}

function relPosY(which){
 if(document.getElementById){
    var elem = document.getElementById(which);
    var pos = elem.offsetTop;
    while(elem.offsetParent != null){
      elem = elem.offsetParent;
      pos += elem.offsetTop;
      if(elem.tagName == 'BODY') break;
    }
 }
return pos;
}