ul#galaxy_image {
    list-style: none;
    background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat 0 0;
    position: relative;
    width: 646px;
    height: 647px;
    margin: 0;
    padding: 0;
}

ul#galaxy_image li {
 position: absolute;
 /*border: 1px solid #000;*/
}

ul#galaxy_image li a{
 display: block;
 height: 100%;
 /*text-indent: -9000px;*/
 height: 100%;
 text-decoration: none;
}


#G1p9 {
   /*background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat -59px -676px;*/
   width: 247px;
   height: 184px;
   top: 136px;
   left: 310px;
}

#G18p9 {
   /*background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat -372px -675px;*/ 
   width: 246px;
   height: 184px;
   top: 232px;
   left: 69px;
}


#DA_530 {
   /*background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat -67px -873px;*/
   width: 239px;
   height: 184px;
   top: 260px;
   left: 47px;
}

#Cas_A {
   /*background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat -371px -872px;*/
   width: 237px;
   height: 184px;
   top: 459px;
   left: 26px;
}

#IC_443 {
   /*background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat -71px -1067px;*/
   width: 236px;
   height: 184px;
   top: 499px;
   left: 323px;
}

#Vela_Jr_I {
   /*background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat -371px -1069px;*/
   width: 238px;
   height: 184px;
   top: 469px;
   left: 350px;
}


#Vela_Jr_II {
   /*background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat -69px -1266px;*/
   width: 238px;
   height: 184px;
   top: 450px;
   left: 361px;
}

#MSH_11-62 {
   /*background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat -371px -1265px;*/
   width: 240px;
   height: 184px;
   top: 248px;
   left: 380px;
}

#G347p3 {
   /*background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat -67px -1463px;*/
   width: 239px;
   height: 184px;
   top: 243px;
   left: 338px;
}

#G350p1 {
   /*background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat -370px -1463px;*/
   width: 242px;
   height: 184px;
   top: 198px;
   left: 341px;
}



ul#galaxy_image li a:hover {
 background: url('http://www.phys.ttu.edu/~raata/Images/S6DirectedSNR_GalaxySprite_resized.png') no-repeat 0 0;
}
 
ul#galaxy_image li#G1p9 a:hover {
 background-position: -59px -676px;
 border: 2px solid black;
}

ul#galaxy_image li#G18p9 a:hover {
 background-position: -372px -675px;
 border: 2px solid black;
}


ul#galaxy_image li#DA_530     a:hover {
 background-position: -67px -873px;
 border: 2px solid black;
}

ul#galaxy_image li#Cas_A      a:hover {
 background-position: -371px -872px;
 border: 2px solid black;
}

ul#galaxy_image li#IC_443     a:hover {
 background-position: -71px -1067px;
 border: 2px solid black;
}

ul#galaxy_image li#Vela_Jr_I  a:hover {
 background-position: -371px -1069px;
 border: 2px solid black;
}

ul#galaxy_image li#Vela_Jr_II a:hover {
 background-position: -69px -1266px;
 border: 2px solid black;
}

ul#galaxy_image li#MSH_11-62  a:hover {
 background-position: -371px -1265px;
 border: 2px solid black;
}

ul#galaxy_image li#G347p3     a:hover {
 background-position: -67px -1463px;
 border: 2px solid black;
}

ul#galaxy_image li#G350p1     a:hover {
 background-position: -370px -1463px; 
 border: 2px solid black;
}


ul#galaxy_image li a span {
 display: none;
}
 
/*ul#galaxy_image li a:hover span {
 display: block;
}*/


/* uncomment below to get text from the unordered list elements */

ul#galaxy_image li a:hover span {
 display: block;
 padding: 5px;
 position: relative;
 top: -40%;
 font-size: 11px;
 font-family: "Lucida Console", "Courier New", "Arial", "Helvetica";
 opacity: 0.75;
 filter: alpha(opacity=75);
 color: #000;  
 border: 2px solid black;
 background-color: #FFF;
}

ul#galaxy_image li a:hover span strong {
 font-size: 20px;
}