IE7 preivew Local image in html page

Use the IE filter "AlphaImageLoader" and javascript

in Header
<style type="text/css">
#newPreview
{
filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale);
}
</style>
<script type="text/javascript" language="javascript">
<!--
function PreviewImg(imgPath)
{

//IE6﹜IE7﹝
var newPreview = document.getElementById("newPreview");
newPreview.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgPath;
}
-->
</script>


in body
<div id="newPreview" ></div>