The best and simplest way to create an always on top is to use <DIV>. I was in need of displaying a Live Support icon in my website. I tried to use Ajax AlwaysVisibleControl and it was not suitable for me.  In order to increase the performance of my site I used <div> in my page with the following code

Aspx Page.

<div id=”live-help”>

— add your content here

</div>

To display the content of above <div> always visible and on top, use the following CSS code

# live-help {

position: fixed;

z-index: 9000;

top: 40%;

right: 0;

width:43px;

height: 48px;

-webkit-border-top-right-radius: 6px ;

-webkit-border-bottom-right-radius: 6px ;

-moz-border-radius: 0px 6px 6px 0;

border-radius: 0px 6px 6px 0;

border-top: 1px solid #282727;

border-right: 1px solid #282727;

border-bottom: 1px solid #282727;

overflow: hidden;

cursor: pointer;

}

Enjoy and happy coding…