function checkConfirmarInscripcion(form)
			{
				var fields = [["name", "el nombre"], ["surname", "los apellidos"], ["nif", "el NIF/NIE"]];
				var fieldValue;

				for (i=0 ; i<fields.length; i++)
				{	
					var fieldValue = form.elements[fields[i][0]].value;

					if ((fieldValue == null) || (fieldValue.length == 0))
					{
						alert("Debes indicar " + fields[i][1]);
						form.elements[fields[i][0]].focus();
						return false;
					}
				}
				
				if (form.elements["id"].selectedIndex == 0)
				{
					alert("Debes indicar la carrera");
					form.elements["id"].focus();
					return false;
				}
					
				return true;
			}