.BT_1
{
    border:1px;
    height:26px;
    text-align:center ;
    vertical-align:middle ;
    border-style:solid;
    padding:0px 0px 0px 0px;
    margin:0px 0px 0px 0px;
    border-color:#7f9db9;  
    background-image:url(Button/BT_Back_1.jpg);
}

.BT_2
{
    border:1px;
    height:26px;
    text-align:center ;
    vertical-align:middle ;
    border-style:solid;
    padding:0px 0px 0px 0px;
    margin:0px 0px 0px 0px;
    border-color:#7f9db9;  
    background-image:url(Button/BT_Back_2.jpg);
}
.BT_2:hover
{
    border:1px;
    height:26px;
    text-align:center ;
    vertical-align:middle ;
    border-style:solid;
    padding:0px 0px 0px 0px;
    margin:0px 0px 0px 0px;
    border-color:#7f9db9;  
    background-image:url(Button/BT_Back_6.jpg);
}

.BT_3
{
    border:1px;
    height:26px;
    text-align:center ;
    vertical-align:middle ;
    border-style:solid;
    padding:1px 1px 1px 1px ;
    margin:1px 1px 1px 1px ;
    border-color:#7f9db9;  
    background-image:url(Button/BT_Back_3.jpg);
}
.BT_3:hover
{
    border:1px;
    height:26px;
    text-align:center ;
    vertical-align:middle ;
    border-style:solid;
    padding:1px 1px 1px 1px ;
    margin:1px 1px 1px 1px ;
    border-color:#7f9db9;  
    background-image:url(Button/BT_Back_7.jpg);
    color:Black ;
}

.BT_4
{
    border:1px;
    height:26px;
    text-align:center ;
    vertical-align:middle ;
    border-style:solid;
    padding:0px 0px 0px 0px;
    margin:0px 0px 0px 0px;
    border-color:#7f9db9;    
    background-image:url(Button/BT_Back_4.jpg);
}

.BT_5
{
    border:1px;
    height:26px;
    text-align:center ;
    vertical-align:middle ;
    border-style:solid;
    padding:0px 0px 0px 0px;
    margin:0px 0px 0px 0px;
    border-color:#7f9db9;  
    background-image:url(Button/BT_Back_5.jpg);
}

.BT_6
{
    border:1px;
    height:26px;
    text-align:center ;
    vertical-align:middle ;
    border-style:solid;
    padding:0px 0px 0px 0px;
    margin:0px 0px 0px 0px;
    border-color:#7f9db9;  
    background-image:url(Button/BT_Back_6.jpg);
}

.BT_7
{
    border:1px;
    height:26px;
    text-align:center ;
    vertical-align:middle ;
    border-style:solid;
    padding:0px 0px 0px 0px;
    margin:0px 0px 0px 0px;
    border-color:#7f9db9;  
    background-image:url(Button/BT_Back_7.jpg);
}

.BT_8
{
    border:1px;
    height:26px;
    text-align:center ;
    vertical-align:middle ;
    border-style:solid;
    padding:0px 0px 0px 0px;
    margin:0px 0px 0px 0px;
    border-color:#7f9db9;  
    background-image:url(Button/BT_Back_8.jpg);
}