ul#mainMenu{
    list-style:none;
}

ul#mainMenu li{
    float:left;
}

ul#mainMenu li a{
    display:block;
    width:100%;
    height:100%;
}

ul#mainMenu li a span{
    display:none;
}


@media screen{

ul#mainMenu li#bt1{
    display:block;
    float:left;
    width:183px;
    height:41px; 
    background:url('../img/mainMenuBt1.png') top left no-repeat;
}

ul#mainMenu li#bt1:hover, ul#mainMenu li#bt1.active{
    background:url('../img/mainMenuBt1On.png') top left no-repeat;
}

ul#mainMenu li#bt1av{
    display:block;
    float:left;
    width:183px;
    height:41px; 
    background:url('../img/mainMenuBt1_AV.png') top left no-repeat;
}

ul#mainMenu li#bt1av:hover, ul#mainMenu li#bt1av.active{
    background:url('../img/mainMenuBt1On_AV.png') top left no-repeat;
}

ul#mainMenu li#bt2{
    display:block;
    float:left;
    width:183px;
    height:41px; 
    background:url('../img/mainMenuBt2.png') top left no-repeat;
}

ul#mainMenu li#bt2:hover, ul#mainMenu li#bt2.active{
    background:url('../img/mainMenuBt2On.png') top left no-repeat;
}

ul#mainMenu li#bt2av{
    display:block;
    float:left;
    width:183px;
    height:41px; 
    background:url('../img/mainMenuBt2_AV.png') top left no-repeat;
}

ul#mainMenu li#bt2av:hover, ul#mainMenu li#bt2av.active{
    background:url('../img/mainMenuBt2On_AV.png') top left no-repeat;
}

ul#mainMenu li#bt3{
    display:block;
    float:left;
    width:182px;
    height:41px; 
    background:url('../img/mainMenuBt3.png') top left no-repeat;
}

ul#mainMenu li#bt3:hover, ul#mainMenu li#bt3.active{
    background:url('../img/mainMenuBt3On.png') top left no-repeat;
}

ul#mainMenu li#bt3av{
    display:block;
    float:left;
    width:182px;
    height:41px; 
    background:url('../img/mainMenuBt3_AV.png') top left no-repeat;
}

ul#mainMenu li#bt3av:hover, ul#mainMenu li#bt3av.active{
    background:url('../img/mainMenuBt3On_AV.png') top left no-repeat;
}

ul#mainMenu li#bt4{
    display:block;
    float:left;
    width:182px;
    height:41px; 
    background:url('../img/mainMenuBt4.png') top left no-repeat;
}

ul#mainMenu li#bt4:hover, ul#mainMenu li#bt4.active{
    background:url('../img/mainMenuBt4On.png') top left no-repeat;
}

ul#mainMenu li#bt4av{
    display:block;
    float:left;
    width:182px;
    height:41px; 
    background:url('../img/mainMenuBt4_AV.png') top left no-repeat;
}

ul#mainMenu li#bt4av:hover, ul#mainMenu li#bt4av.active{
    background:url('../img/mainMenuBt4On_AV.png') top left no-repeat;
}


}

@media print{

ul#mainMenu li#bt1{

    display: list-item;
    list-style-image: url('../img/mainMenuBt1.png');
    list-style-position: inside;

    float:left;
    width:183px;
    height:41px; 

    letter-spacing: -1000em;
    font-size: 1pt;
    color: #fff;
}

ul#mainMenu li#bt1:hover, ul#mainMenu li#bt1.active{
    list-style-image: url('../img/mainMenuBt1On.png');
}

ul#mainMenu li#bt1av{

    display: list-item;
    list-style-image: url('../img/mainMenuBt1_AV.png');
    list-style-position: inside;

    float:left;
    width:183px;
    height:41px; 

    letter-spacing: -1000em;
    font-size: 1pt;
    color: #fff;
}

ul#mainMenu li#bt1av:hover, ul#mainMenu li#bt1av.active{
    list-style-image: url('../img/mainMenuBt1On_AV.png');
}

ul#mainMenu li#bt2{

    display: list-item;
    list-style-image: url('../img/mainMenuBt2.png');
    list-style-position: inside;

    float:left;
    width:183px;
    height:41px; 

    letter-spacing: -1000em;
    font-size: 1pt;
    color: #fff;
}

ul#mainMenu li#bt2:hover, ul#mainMenu li#bt2.active{
    list-style-image: url('../img/mainMenuBt2On.png');
}

ul#mainMenu li#bt2av{

    display: list-item;
    list-style-image: url('../img/mainMenuBt2_AV.png');
    list-style-position: inside;

    float:left;
    width:183px;
    height:41px; 

    letter-spacing: -1000em;
    font-size: 1pt;
    color: #fff;
}

ul#mainMenu li#bt2av:hover, ul#mainMenu li#bt2av.active{
    list-style-image: url('../img/mainMenuBt2On_AV.png');
}

ul#mainMenu li#bt3{

    display: list-item;
    list-style-image: url('../img/mainMenuBt3.png');
    list-style-position: inside;

    float:left;
    width:183px;
    height:41px; 

    letter-spacing: -1000em;
    font-size: 1pt;
    color: #fff;
}

ul#mainMenu li#bt3:hover, ul#mainMenu li#bt3.active{
    list-style-image: url('../img/mainMenuBt3On.png');
}

ul#mainMenu li#bt3av{

    display: list-item;
    list-style-image: url('../img/mainMenuBt3_AV.png');
    list-style-position: inside;

    float:left;
    width:183px;
    height:41px; 

    letter-spacing: -1000em;
    font-size: 1pt;
    color: #fff;
}

ul#mainMenu li#bt3av:hover, ul#mainMenu li#bt3av.active{
    list-style-image: url('../img/mainMenuBt3On_AV.png');
}

ul#mainMenu li#bt4{

    display: list-item;
    list-style-image: url('../img/mainMenuBt4.png');
    list-style-position: inside;

    float:left;
    width:180px;
    height:41px; 

    letter-spacing: -1000em;
    font-size: 1pt;
    color: #fff;
}

ul#mainMenu li#bt4:hover, ul#mainMenu li#bt4.active{
    list-style-image: url('../img/mainMenuBt4On.png');
}

ul#mainMenu li#bt4av{

    display: list-item;
    list-style-image: url('../img/mainMenuBt4_AV.png');
    list-style-position: inside;

    float:left;
    width:180px;
    height:41px; 

    letter-spacing: -1000em;
    font-size: 1pt;
    color: #fff;
}

ul#mainMenu li#bt4av:hover, ul#mainMenu li#bt4av.active{
    list-style-image: url('../img/mainMenuBt4On_AV.png');
}


}