for IE7 and IE8
image.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod = 'image',src='"+imageURL+"')";
for IE6 and Fire fox
div.style.backgroundImage = 'url('+imageURL+')';
image.src=imageURL
for IE7 and IE8
image.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod = 'image',src='"+imageURL+"')";
for IE6 and Fire fox
div.style.backgroundImage = 'url('+imageURL+')';
image.src=imageURL