using imgRef.src to extract a url from a specific image

[acidnine]

How do I use imgRef.src to extract a url from say a specific image like <img src="http://www.com/image1.gif"> and then have it specify http://www.com/image1.gif so then I can take that and reinsert it as <img src="http://www.com/image1.gif" height="300px" width="400px">

Any ideas?