getting image size

[admin]

how can i get by code the image size that is on the <br />
server?<!--content-->if you do not have an image reference...<br />
<br />
var img = new Image();<br />
img.src=http://www.webdeveloper.com/forum/archive/index.php/"/images/some.gif";<br />
<br />
//now you can get the image size.<br />
<br />
var imgW = img.width;<br />
var imgH = img.height;<br />
<br />
if you already have an image loaded on the page somewhere<br />
in that case give that image an id attribute and reference it as follows.<br />
<br />
var img = document.getElementBYId("imgId");<br />
//now you can get the image size.<br />
<br />
var imgW = img.width;<br />
var imgH = img.height;<!--content-->