.clear {
  clear: both;
}
td.tight {
  white-space: nowrap;
  width: 1%;
}
th.tight {
    white-space: nowrap;    
}

.la {
  text-align: left;
}

.ra {
  text-align: right;
}

.ca {
  text-align: center;
}

.right {
    float: right;
}

.left {
    float: left;
}

img {
    border: 0;
}

form {
    display: inline;
}

.hidden {
    display: none;
}