Please put your code in [CODE]
your code here[/CODE] tags.
The real error isn't easy to track down, because you're using a minified version of jQuery. Change that to a readable one, and your stacktrace will give you better information.
A thing at the bottom of your stacktrace that definitely doesn't look right is this:
PHP Code:
$("#paper1").animate({
width: '719px',
height: '794px',
top: 0,
left: 0,
opacity: 1,
position: "relative",
zIndex: 4
}, { queue: true, duration: 300});
jQuery doesn't animate "position" or "zIndex" properties, so you should definitely take them out and use the jQuery.css method for those instead.
Also, what's with the PNGs? Those images are *huge*, and definitely the wrong format for what you're doing. Use JPGs instead.