I have images that will be quite big in dimension and I want to shrink them down with jQuery while keeping the proportions constrained, i.e. the same aspect ratio.
C
The resize can be achieved(maintaining aspect ratio) using CSS. This is a further simplified answer inspired by Dan Dascalescu's post.
http://jsbin.com/viqare
img{ max-width:200px; /*Or define max-height*/ }