css fiexed

<style type="text/css">
.fixed-top    /* position fixed Top    */{position:fixed;bottom:auto;top:0px;}

.fixed-bottom /* position fixed Bottom */{position:fixed;bottom:0px;top:auto;}

.fixed-left   /* position fixed Left   */{position:fixed;right:auto;left:0px;}

.fixed-right  /* position fixed right  */{position:fixed;right:0px;left:auto;}

* html,* html body   /* IE6 Fixed Position Jitter Fix */{background-image:url(about:blank);background-attachment:fixed;}

* html .fixed-top    /* IE6 position fixed Top        */{position:absolute;bottom:auto;top:expression(eval(document.documentElement.scrollTop));}

* html .fixed-right  /* IE6 position fixed right      */{position:absolute;right:auto;left:expression(eval(document.documentElement.scrollLeft+document.documentElement.clientWidth-this.offsetWidth)-(parseInt(this.currentStyle.marginLeft,10)||0)-(parseInt(this.currentStyle.marginRight,10)||0));}

* html .fixed-bottom /* IE6 position fixed Bottom     */{position:absolute;bottom:auto;top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-(parseInt(this.currentStyle.marginTop,10)||0)-(parseInt(this.currentStyle.marginBottom,10)||0)));}

* html .fixed-left   /* IE6 position fixed Left       */{position:absolute;right:auto;left:expression(eval(document.documentElement.scrollLeft));}

</style>

<div class="fixed-bottom" style="text-align:center; width:100%; left:0;"> <img src="imagename.gif" border="0"> </div>