How to apply image on menu for slider using jQuery Lava Lamp Plugin in ASP.Net

hi

I use below code for horizental menu

https://www.script-tutorials.com/pure-css3-lavalamp-menu/

as you see here, is image that move at top of menu below is css for that image:

#lavalamp {
    background: url('lavalamp.png') no-repeat scroll 0 0 transparent;
    height: 16px;
    left: 13px;
    position: absolute;
    top: 0px;
    width:64px;
    -moz-transition: all 300ms ease;
    -ms-transition: all 300ms ease;
    -o-transition: all 300ms ease;
    -webkit-transition: all 300ms ease;
    transition: all 300ms ease;
}

now I want use other image for it so I change width and hieght:

#lavalamp {
    background: url('TopImage.png') no-repeat scroll 0 0 transparent;
    height: 57px;
    left: 300px;
    position: absolute;
    top: 0px;
    width:170px;

    -moz-transition: all 300ms ease;
    -ms-transition: all 300ms ease;
    -o-transition: all 300ms ease;
    -webkit-transition: all 300ms ease;
    transition: all 300ms ease;
}

here when I change  width:170px i t worked correctly but when I change  hight:57px  it doesn't worked correctly I mean when I move with mouse over menu image doesn't move or move hardly

below is complete css:

@font-face {
    font-family:'m1';/*تعریف یک نام برای فونت*/
    src:url('../fonts/m1.eot');/*اکسپلورر 9 به بعد*/
    src:local('m1'),/*بررسی نصب بودن فونت در سیستم کاربر*/
        local('m1'),/*برای برخی از مرورگرها مانند سافاری*/
        url('../fonts/m1.eot?#iefix') format('embedded-opentype'),/*هک برای اکسپلورر 8 و ماقبل*/
        url('../fonts/m1.woff') format('woff'),/*مرورگر های جدید*/
        url('../fonts/m1.ttf') format('truetype'),/*تمام مرورگرها به جزء اکسپلورر*/
        url('../fonts/m1.svg#m1') format('svg');/*نسخه های قدیمی سیستم عامل iOS*/
    font-style:normal;
    font-weight:normal;
}

#nav,#nav ul {
    list-style: none outside none;
    margin: 0;
    padding: 0;
      /*border:1px solid green;*/
}
#nav {
    background: url('menu_bg.png') no-repeat scroll 0 0 transparent;
    clear: both;
    font-size: 12px;
    height: 58px;
    padding: 0 0 0 9px;
    position: relative;
    width: 450px;
}
#nav ul {
    background-color: #222;
    border:1px solid #222;
    border-radius: 0 5px 5px 5px;
    border-width: 0 1px 1px;
    box-shadow: 0 5px 5px rgba(0, 0, 0, 0.5);
    left: -9999px;
    overflow: hidden;
    position: absolute;
    top: -9999px;
    z-index: 2;

    -moz-transform: scaleY(0);
    -ms-transform: scaleY(0);
    -o-transform: scaleY(0);
    -webkit-transform: scaleY(0);
    transform: scaleY(0);
     /*border:1px solid blue;*/

    /*-moz-transform-origin: 0 0;
    -ms-transform-origin: 0 0;
    -o-transform-origin: 0 0;
    -webkit-transform-origin: 0 0;
    transform-origin: 0 0;

    -moz-transition: -moz-transform 0.1s linear;
    -ms-transition: -ms-transform 0.1s linear;
    -o-transition: -o-transform 0.1s linear;
    -webkit-transition: -webkit-transform 0.1s linear;
    transition: transform 0.1s linear;*/
}
#nav li {
    /*background: url('menu_line.png') no-repeat scroll right 5px transparent;*/
    float: left;
    position: relative;
     /*border:1px solid red;*/
}
.container {
     float:right;
    height: 55px;
    /*margin: 10px auto;*/
    width: 460px;
     margin:10px 36px 0 0;
     /*border:1px solid red;*/

}
#nav li a {
    color: #C6b85e;
    display: block;
    float: left;
    /*font-weight: normal;*/
     font-family:m1;
    height: 30px;
    padding: 15px 32px 0;
    position: relative;
    text-decoration: none;
    text-shadow: 1px 1px 1px #000000;
     font-size:17px;
}
#nav li:hover > a {
    color: white;
}
#nav li:hover, #nav a:focus, #nav a:hover, #nav a:active {
    background: none repeat scroll 0 0;
     /*height:41px;*/
    outline: 0 none;
}
#nav li:hover ul.subs {
    left: 0;
    top: 53px;
    width: 180px;
   
    -moz-transform: scaleY(1);
    -ms-transform: scaleY(1);
    -o-transform: scaleY(1);
    -webkit-transform: scaleY(1);
    transform: scaleY(1);
}
#nav ul li {
    background: none;
    width: 100%;
}
#nav ul li a {
    float: none;
}
#nav ul li:hover > a {
    background-color: #121212;
    color: #00B4FF;
}
#lavalamp {
    background: url('lavalamp.png') no-repeat scroll 0 0 transparent;
    height: 57px;
    left: 300px;
    position: absolute;
    top: 0px;
    width:170px;

    -moz-transition: all 300ms ease;
    -ms-transition: all 300ms ease;
    -o-transition: all 300ms ease;
    -webkit-transition: all 300ms ease;
    transition: all 300ms ease;
}
#lavalamp:hover {
    -moz-transition-duration: 3000s;
    -ms-transition-duration: 3000s;
    -o-transition-duration: 3000s;
    -webkit-transition-duration: 3000s;
    transition-duration: 3000s;
}

#nav li:nth-of-type(1):hover ~ #lavalamp {
    left: 5px;
}
#nav li:nth-of-type(2):hover ~ #lavalamp {
    left: 150px;
}
#nav li:nth-of-type(3):hover ~ #lavalamp {
    left: 294px;
}
#nav li:nth-of-type(4):hover ~ #lavalamp {
    left: 250px;
}
#nav li:nth-of-type(5):hover ~ #lavalamp {
    left: 330px;
}
#nav li:nth-of-type(6):hover ~ #lavalamp {
    left: 410px;
}
#nav li:nth-of-type(7):hover ~ #lavalamp {
    left: 490px;
}
#nav li:nth-of-type(8):hover ~ #lavalamp {
    left: 565px;
}

what should I do now?

best regards

neda