Updated demo code with chained animations
…end vals to integers if a unit was specified
Scrollorama fails in IE8 and below when animating the background-position values. When the browser is detected as IE8 or lower, it will convert those properties to the backgroundPosition property these versions of IE enjoy.
…izing the plugin, and memory management.
…t and end if they are undefined
…styles to CSS from JS.
…e scrolling. Using pattern from: http://ejohn.org/blog/learning-from-twitter/