function pulsar_busqueda(e) { 
	tecla=(document.all) ? e.keyCode : e.which; 
	if (tecla==13){
		window.location='?que=Your_Account&op=userinfo&username='+document.form.username.value;
		return false;
	}
}
function limpiar_tarjeta(){
	document.getElementById("tarjeta_de_contacto").innerHTML="";
}

function resize(elem, max) {
  //var elem = document.getElementById(which);
  if (elem == undefined || elem == null) return false;
  if (max == undefined) max = 100;
  if (elem.width > elem.height) {
    if (elem.width > max) elem.width = max;
  } else {
    if (elem.height > max) elem.height = max;
  }
}