JavaScript
Referencia sobre JavaScript
by paulorb on jun.14, 2012, under JavaScript
Otima referencia sobre javascript feita pelo criador do JQuery
http://ejohn.org/apps/learn/#1
Pre-Load de imagens em JQuery
by paulorb on mar.13, 2012, under JavaScript, JQuery
Uma boa referencia: http://jquery-howto.blogspot.com/2009/02/preload-images-with-jquery.html