Use canvas for fileupload preview.

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9665 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Default value change.

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9666 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Parse int for height.

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9667 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c