Admin Interface Not Working?

I uploaded a local install of WP to the host, then imported the database through phpMyAdmin and assigned a user. I then searched the database and replaced any references to the local install address with the domain where the site resides.

Everything seems to work great, except the WordPress admin interface. Screen options and help don’t slide open when I click them, the sidebar won’t collapse to icons only or expand/collapse sections, I can’t rearrange panels (they don’t drag), etc.

IE gives me several errors on the page:

Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)
Timestamp: Thu, 26 Aug 2010 17:24:27 UTC

Message: Object expected
Line: 309
Char: 2
Code: 0
URI: http://americanconstructionsupply.com/wp-admin/

Message: Object expected
Line: 336
Char: 5
Code: 0
URI: http://americanconstructionsupply.com/wp-admin/

Message: Object expected
Line: 350
Char: 5
Code: 0
URI: http://americanconstructionsupply.com/wp-admin/

Message: ‘jQuery’ is undefined
Line: 1
Char: 1
Code: 0
URI: http://americanconstructionsupply.com/wp-admin/load-scripts.php?c=1&load=hoverIntent,common,jquery-color,wp-ajax-response,wp-lists,jquery-ui-core,jquery-ui-resizable,admin-comments,jquery-ui-sortable,postbox,dashboard,thickbox,plugin-install,media-upload&ver=1c33e12a06a28402104d18bdc95ada53

I assume something went wrong in uploading the files and importing the database. Does anyone know what it might be? And how to fix it? I tried having WP do an auto-reinstall, didn’t change anything. Thanks.