function EditInput(input, add, where)
{
  if(input.value.length >= 8)
  {}
  else
  {
    if(input.value.length >= where)
	{
	  if ( input.value.substring(where-2,where-1) == add )
	  { 
	    if ( where == 3 )
	    { 
	      input.value = '0' + input.value.substring(0,where-2) + add + input.value.substring(where-1,where+1) 
	    }
	    if ( where == 6 )
	    {
	      input.value = input.value.substring(0,3) + '0' + input.value.substring(3,where-2) + add + input.value.substring(where-1,where+1)
	    }
	  }
	  if ( input.value.substring(where-1,where) != add ) 
	  { 
	    input.value = input.value.substring(0,where-1) + add + input.value.substring(where-1,where+1) 
	  }
	}
  }
}