Tells you if any images on the page are mis-sized, through CSS or incorrect height/width attributes.

1) Copy the below (it should all be on one line).

javascript:a=document.images;for(b=0,z=0;b<a.length;b++){c=new Image();c.o=a[b];c.onreadystatechange=function(){i=this;o=i.o;if(i.width!=o.width||i.height!=o.height){o.style.border="10px solid yellow";o.title="SHOULD BE "+i.width+"x"+i.height;z++}};c.src=a[b].src};alert(z==0?"all clear!":(z+" are broken"));

2) Make a new bookmark in IEWindows
3) Edit the bookmark's properties.
4) Paste the above into the properties. Click OK and 'yes' to the message about going ahead.

5) Go to the page to test.
6) Press the bookmark on your button bar for the above.

You will either see "all clear!" (indicating no problem images were found) or "x are broken".
Every broken image will have a large yellow border around it; mousing over that image will show the title attribute with the correct dimensions for the image.