function popup(imgURI, D, L, T, W, H) {
  var pw=document.getElementById(D);
  if(document.getElementById('pop-up')){
    document.getElementById('pop-up').parentNode.removeChild(document.getElementById('pop-up'));
  }
  var popUp=document.createElement('div');
  popUp.setAttribute('id','pop-up');
  var pop=pw.appendChild(popUp);
  pop.onclick = function(){
    document.getElementById('pop-up').parentNode.removeChild(document.getElementById('pop-up'));
  };
  var sh=document.createElement('img');
  sh.src='imagenes/shadow.png';
  sh.id='dropshadow';
  ds=pop.appendChild(sh);
  pop.style.position='absolute';
  pop.style.left=L+'px';
  pop.style.top=T+'px';
  pop.style.width=W+'px'; /*exact width and height for border for IE6, other browsers expand as needed*/
  pop.style.height=H+'px';
  pop.style.display='block';
  pop.style.zIndex='98';
  ds.style.width=W+5+'px';
  ds.style.height=H+5+'px';
  ds.style.zIndex='99';
  var image=document.createElement('img'); /*load image into pop*/
  image.src=imgURI;
  image.id='popup-image';
  var ic=pop.appendChild(image);
  ic.style.width=W+'px';
  ic.style.height=H+'px';
  ic.style.zIndex='100';
}