/* BIG NAVIGATION BUTTON*/
.bignavbutton {
               position:relative;
               font-family: arial, helvetica, sans-serif;
               background-image:  url(../images/Big_Button_Hover.jpg);
               background-repeat: no-repeat;
               white-space: nowrap;
               display: block;
               width: 175px;
               height: 50px;
               margin: 0px;
               padding: 0px;
              }
.bignavbutton a {
                 display: block;
                 font-size: 12px;
                 font-weight:bold;
                 width: 175px;
                 height: 50px;
                 float: left;
                 color: black;
                 text-decoration: none;
                }

.bignavbutton img {width: 175px; height: 50px; border: 0; }
* html a:hover {visibility:visible}
.bignavbutton a:hover img{visibility:hidden}

.bignavbutton span {
                    position: absolute;
                    left: 0px;
                    top: 15px;
                    margin: 0px;
                    padding: 0px;
                    cursor: pointer;
                    width: 175px;
                    height: 50px;
                    text-align: center;
                    vertical-align: middle;	
                   }