var img = new Image();<br /> img.onload = function() {<br /> alert(this.width + ‘x’ + this.height);<br /> }<br /> img.src=”http://www.google.com/intl/en_ALL/images/logo.gif”;

var img = document.getElementById(“myImageID”);<br /> var imgWidth = img.clientWidth;<br /> var imgHeight = img.clientHeight;

// for the original width and height in px of the source<br /> image.naturalWidth, image.naturalHeight</p> <p>// for the image size in px rendered on the screen<br /> image.width, image.height

image.width