div.head_navigation {
  height: 3em;
  background-color: #DFDFDF;
  font-family: Arial,Helvetica,sans-serif; 
  font-size: 1em; 
  font-weight: normal; 
  width: 800px;  
  text-transform: uppercase; 
  text-align:  center; 	
}
a.head_navigation:link {
  text-decoration: none;
  color: black;
  font-family: Arial,Helvetica,sans-serif;
  font-weight: normal;
  font-size: 1em;
}
a.head_navigation:hover {
  font-weight: bold;
  color: #ff6666;
  font-family: Arial,Helvetica,sans-serif;
  font-size: 1em;
  text-decoration: none;
}
a.head_navigation:visited {
  text-decoration: none;
  font-weight: bold;
  font-size: 1em;
  color: #ff9900;
  font-family: Arial,Helvetica,sans-serif;
}
table.head_navigation {
  height: 3em;
}
td.head_navigation {
  vertical-align:middle;
}
td.head_navigation:hover{
  background-color:gray;
  color:white
}
div.foot_navigation {
  background-color: #DFDFDF;
  color: black; 
  font-family: Arial,Helvetica,sans-serif; 
  font-size: 0.8em; 
  width: 800px;	
  text-align:  center; 	
}
a.foot_navigation:link {
  color: black;
  text-decoration: underline;
}
a.foot_navigation:hover {
  color: #ff6666;
}
a.foot_navigation:visited {
  color: yellow;
}
table.foot_navigation {
  height: 2em;
  width: 800px;
}
td.foot_navigation {
  vertical-align:middle;
}
td.foot_navigation:hover{
  background-color:gray;
  color:white
}